diff --git a/doc_src/objects.json b/doc_src/objects.json
index a423b1f..5912efd 100644
--- a/doc_src/objects.json
+++ b/doc_src/objects.json
@@ -1 +1 @@
-{"project": "aligned_textgrid", "version": "0.0.9999", "count": 55, "items": [{"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_final", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_final", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_fol", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_fol", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_initial", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_initial", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_prev", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_prev", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.get_tierwise", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.get_tierwise", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.return_interval", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.return_interval", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.return_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.return_point", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.fuse_leftwards", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.fuse_leftwards", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.fuse_rightwards", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.fuse_rightwards", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.index", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.pop", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.pop", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.set_feature", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.set_feature", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.Top", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Top.html#aligned_textgrid.sequences.sequences.Top", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.Bottom", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Bottom.html#aligned_textgrid.sequences.sequences.Bottom", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.distance_from", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.distance_from", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.get_interval_at_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.get_interval_at_point", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.get_interval_index_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.get_interval_index_at_time", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierMixins.index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierMixins.html#aligned_textgrid.mixins.tiermixins.TierMixins.index", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierMixins.html#aligned_textgrid.mixins.tiermixins.TierMixins", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierGroupMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierGroupMixins.html#aligned_textgrid.mixins.tiermixins.TierGroupMixins", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.get_interval_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.get_interval_at_time", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.pop", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.pop", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.return_tier", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.return_tier", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.save_as_tg", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.save_as_tg", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point_index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point_index", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.return_tier", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.return_tier", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.save_as_tg", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.save_as_tg", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup.show_structure", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup.show_structure", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_class_by_name", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_class_by_name", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_intervals_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_intervals_at_time", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.interleave_class", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.interleave_class", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.return_textgrid", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.return_textgrid", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.save_textgrid", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.save_textgrid", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid", "domain": "py", "role": "class", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Word.set_phones", "domain": "py", "role": "function", "priority": "1", "uri": "reference/Word.html#aligned_textgrid.sequences.word_and_phone.Word.set_phones", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Word", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Word.html#aligned_textgrid.sequences.word_and_phone.Word", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Phone.set_word", "domain": "py", "role": "function", "priority": "1", "uri": "reference/Phone.html#aligned_textgrid.sequences.word_and_phone.Phone.set_word", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Phone", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Phone.html#aligned_textgrid.sequences.word_and_phone.Phone", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.PrStr", "domain": "py", "role": "class", "priority": "1", "uri": "reference/PrStr.html#aligned_textgrid.polar.polar_classes.PrStr", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.ToBI", "domain": "py", "role": "class", "priority": "1", "uri": "reference/ToBI.html#aligned_textgrid.polar.polar_classes.ToBI", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.ToBI", "domain": "py", "role": "class", "priority": "1", "uri": "reference/ToBI.html#aligned_textgrid.polar.polar_classes.ToBI", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.TurningPoints", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TurningPoints.html#aligned_textgrid.polar.polar_classes.TurningPoints", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Ranges", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Ranges.html#aligned_textgrid.polar.polar_classes.Ranges", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Levels", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Levels.html#aligned_textgrid.polar.polar_classes.Levels", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Misc", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Misc.html#aligned_textgrid.polar.polar_classes.Misc", "dispname": "-"}, {"name": "aligned_textgrid.outputs.to_dataframe.to_df", "domain": "py", "role": "function", "priority": "1", "uri": "reference/to_df.html#aligned_textgrid.outputs.to_dataframe.to_df", "dispname": "-"}]}
\ No newline at end of file
+{"project": "aligned_textgrid", "version": "0.0.9999", "count": 57, "items": [{"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_final", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_final", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_fol", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_fol", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_initial", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_initial", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins.set_prev", "domain": "py", "role": "function", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins.set_prev", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.PrecedenceMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/PrecedenceMixins.html#aligned_textgrid.mixins.mixins.PrecedenceMixins", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.get_tierwise", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.get_tierwise", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.return_interval", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.return_interval", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins.return_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins.return_point", "dispname": "-"}, {"name": "aligned_textgrid.mixins.mixins.InTierMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/InTierMixins.html#aligned_textgrid.mixins.mixins.InTierMixins", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.fuse_leftwards", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.fuse_leftwards", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.fuse_rightwards", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.fuse_rightwards", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.index", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.pop", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.pop", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval.set_feature", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval.set_feature", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.SequenceInterval", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequenceInterval.html#aligned_textgrid.sequences.sequences.SequenceInterval", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.Top", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Top.html#aligned_textgrid.sequences.sequences.Top", "dispname": "-"}, {"name": "aligned_textgrid.sequences.sequences.Bottom", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Bottom.html#aligned_textgrid.sequences.sequences.Bottom", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.distance_from", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.distance_from", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.get_interval_at_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.get_interval_at_point", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint.get_interval_index_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint.get_interval_index_at_time", "dispname": "-"}, {"name": "aligned_textgrid.points.points.SequencePoint", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequencePoint.html#aligned_textgrid.points.points.SequencePoint", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierMixins.index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierMixins.html#aligned_textgrid.mixins.tiermixins.TierMixins.index", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierMixins.html#aligned_textgrid.mixins.tiermixins.TierMixins", "dispname": "-"}, {"name": "aligned_textgrid.mixins.tiermixins.TierGroupMixins", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierGroupMixins.html#aligned_textgrid.mixins.tiermixins.TierGroupMixins", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.get_interval_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.get_interval_at_time", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.pop", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.pop", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.return_tier", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.return_tier", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier.save_as_tg", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier.save_as_tg", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.SequenceTier", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequenceTier.html#aligned_textgrid.sequences.tiers.SequenceTier", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point_index", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.get_nearest_point_index", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.return_tier", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.return_tier", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier.save_as_tg", "domain": "py", "role": "function", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier.save_as_tg", "dispname": "-"}, {"name": "aligned_textgrid.points.tiers.SequencePointTier", "domain": "py", "role": "class", "priority": "1", "uri": "reference/SequencePointTier.html#aligned_textgrid.points.tiers.SequencePointTier", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup.shift", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup.shift", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup.show_structure", "domain": "py", "role": "function", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup.show_structure", "dispname": "-"}, {"name": "aligned_textgrid.sequences.tiers.TierGroup", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TierGroup.html#aligned_textgrid.sequences.tiers.TierGroup", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_class_by_name", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_class_by_name", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_intervals_at_time", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_intervals_at_time", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.interleave_class", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.interleave_class", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.return_textgrid", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.return_textgrid", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.save_textgrid", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.save_textgrid", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid.shift", "domain": "py", "role": "function", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid.shift", "dispname": "-"}, {"name": "aligned_textgrid.aligned_textgrid.AlignedTextGrid", "domain": "py", "role": "class", "priority": "1", "uri": "reference/AlignedTextGrid.html#aligned_textgrid.aligned_textgrid.AlignedTextGrid", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Word.set_phones", "domain": "py", "role": "function", "priority": "1", "uri": "reference/Word.html#aligned_textgrid.sequences.word_and_phone.Word.set_phones", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Word", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Word.html#aligned_textgrid.sequences.word_and_phone.Word", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Phone.set_word", "domain": "py", "role": "function", "priority": "1", "uri": "reference/Phone.html#aligned_textgrid.sequences.word_and_phone.Phone.set_word", "dispname": "-"}, {"name": "aligned_textgrid.sequences.word_and_phone.Phone", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Phone.html#aligned_textgrid.sequences.word_and_phone.Phone", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.PrStr", "domain": "py", "role": "class", "priority": "1", "uri": "reference/PrStr.html#aligned_textgrid.polar.polar_classes.PrStr", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.ToBI", "domain": "py", "role": "class", "priority": "1", "uri": "reference/ToBI.html#aligned_textgrid.polar.polar_classes.ToBI", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.ToBI", "domain": "py", "role": "class", "priority": "1", "uri": "reference/ToBI.html#aligned_textgrid.polar.polar_classes.ToBI", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.TurningPoints", "domain": "py", "role": "class", "priority": "1", "uri": "reference/TurningPoints.html#aligned_textgrid.polar.polar_classes.TurningPoints", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Ranges", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Ranges.html#aligned_textgrid.polar.polar_classes.Ranges", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Levels", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Levels.html#aligned_textgrid.polar.polar_classes.Levels", "dispname": "-"}, {"name": "aligned_textgrid.polar.polar_classes.Misc", "domain": "py", "role": "class", "priority": "1", "uri": "reference/Misc.html#aligned_textgrid.polar.polar_classes.Misc", "dispname": "-"}, {"name": "aligned_textgrid.outputs.to_dataframe.to_df", "domain": "py", "role": "function", "priority": "1", "uri": "reference/to_df.html#aligned_textgrid.outputs.to_dataframe.to_df", "dispname": "-"}]}
\ No newline at end of file
diff --git a/doc_src/reference/AlignedTextGrid.qmd b/doc_src/reference/AlignedTextGrid.qmd
index 26c1304..dbb0b41 100644
--- a/doc_src/reference/AlignedTextGrid.qmd
+++ b/doc_src/reference/AlignedTextGrid.qmd
@@ -14,13 +14,14 @@ An aligned Textgrid
 
 ## Attributes
 
-| Name          | Type                                         | Description                                          |
-|---------------|----------------------------------------------|------------------------------------------------------|
-| entry_classes | list\[Sequence\[Type\[SequenceInterval\]\]\] | The entry classes for each tier within a tier group. |
-| tier_groups   | list\[TierGroup\]                            | a list of `TierGroup`                                |
-| xmax          | float                                        | Maximum time                                         |
-| xmin          | float                                        | Minimum time                                         |
-| \[\]          |                                              | indexable                                            |
+| Name          | Type                                                     | Description                                          |
+|---------------|----------------------------------------------------------|------------------------------------------------------|
+| entry_classes | list\[Sequence\[Type\[SequenceInterval\]\]\] \| list\[\] | The entry classes for each tier within a tier group. |
+| tier_groups   | list\[TierGroup\] \| list\[\]                            | A list of `TierGroup` or an empty list.              |
+| tier_names    | list\[str\]                                              | A list of names for tiers in tier_groups.            |
+| xmax          | float                                                    | Maximum time                                         |
+| xmin          | float                                                    | Minimum time                                         |
+| \[\]          |                                                          | indexable                                            |
 
 ## Methods
 
@@ -31,6 +32,7 @@ An aligned Textgrid
 | [interleave_class](#aligned_textgrid.aligned_textgrid.AlignedTextGrid.interleave_class) | Interleave a new entry class. |
 | [return_textgrid](#aligned_textgrid.aligned_textgrid.AlignedTextGrid.return_textgrid) | Convert this `AlignedTextGrid` to a `praatio` `Textgrid` |
 | [save_textgrid](#aligned_textgrid.aligned_textgrid.AlignedTextGrid.save_textgrid) | Saves the current AlignedTextGrid |
+| [shift](#aligned_textgrid.aligned_textgrid.AlignedTextGrid.shift) | Shift all times (interval starts & ends and point times) |
 
 ### get_class_by_name { #aligned_textgrid.aligned_textgrid.AlignedTextGrid.get_class_by_name }
 
@@ -116,4 +118,17 @@ Uses the `praatio.data_classes.textgrid.Textgrid.save()` method.
 | Name        | Type                                                                  | Description                  | Default           |
 |-------------|-----------------------------------------------------------------------|------------------------------|-------------------|
 | `save_path` | str                                                                   | path for saving the textgrid | _required_        |
-| `format`    | Literal\['short_textgrid', 'long_textgrid', 'json', 'textgrid_json'\] | Save format.                 | `'long_textgrid'` |
\ No newline at end of file
+| `format`    | Literal\['short_textgrid', 'long_textgrid', 'json', 'textgrid_json'\] | Save format.                 | `'long_textgrid'` |
+
+### shift { #aligned_textgrid.aligned_textgrid.AlignedTextGrid.shift }
+
+`aligned_textgrid.AlignedTextGrid.shift(increment)`
+
+Shift all times (interval starts & ends and point times)
+by the given increment.
+
+#### Parameters
+
+| Name        | Type   | Description                                                               | Default    |
+|-------------|--------|---------------------------------------------------------------------------|------------|
+| `increment` | float  | The increment by which to shift all times. Could be positive or negative. | _required_ |
\ No newline at end of file
diff --git a/doc_src/reference/TierGroup.qmd b/doc_src/reference/TierGroup.qmd
index 8d4c83c..0e2998e 100644
--- a/doc_src/reference/TierGroup.qmd
+++ b/doc_src/reference/TierGroup.qmd
@@ -26,6 +26,7 @@ Tier Grouping
 | Name | Description |
 | --- | --- |
 | [get_intervals_at_time](#aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time) | Get intervals at time |
+| [shift](#aligned_textgrid.sequences.tiers.TierGroup.shift) | Shift the start and end times of all intervals within |
 | [show_structure](#aligned_textgrid.sequences.tiers.TierGroup.show_structure) | Show the hierarchical structure |
 
 ### get_intervals_at_time { #aligned_textgrid.sequences.tiers.TierGroup.get_intervals_at_time }
@@ -48,6 +49,19 @@ Returns a list of intervals at `time` for each tier.
 |-------------|--------------------------------------------------------------|
 | list\[int\] | A list of interval indices, one for each tier in `tier_list` |
 
+### shift { #aligned_textgrid.sequences.tiers.TierGroup.shift }
+
+`sequences.tiers.TierGroup.shift(increment)`
+
+Shift the start and end times of all intervals within
+the TierGroup by the increment size
+
+#### Parameters
+
+| Name        | Type   | Description                                                                                            | Default    |
+|-------------|--------|--------------------------------------------------------------------------------------------------------|------------|
+| `increment` | float  | The time increment by which to shift the intervals within the TierGroup. Could be positive or negative | _required_ |
+
 ### show_structure { #aligned_textgrid.sequences.tiers.TierGroup.show_structure }
 
 `sequences.tiers.TierGroup.show_structure()`