diff --git a/doc/JSON_FLAGS.md b/doc/JSON_FLAGS.md
index 11ba284f46c42..64e802199dc73 100644
--- a/doc/JSON_FLAGS.md
+++ b/doc/JSON_FLAGS.md
@@ -79,7 +79,7 @@ List of known flags, used in both terrain.json and furniture.json
 - ```FLAMMABLE_ASH``` Burns to ash rather than rubble.
 - ```FLAMMABLE_HARD``` Harder to light on fire, but still possible.
 - ```FLAT``` Player can build and move furniture on.
-- ```FLAT_SURF``` Furniture or terrain or vehicle part with flat hard surface (ex. table, but not chair; tree stump, etc.).
+- ```FLAT_SURF``` Furniture or terrain with flat hard surface (e.g. table, but not chair; tree stump, etc.).
 - ```GOES_DOWN``` Can use <kbd>></kbd> to go down a level.
 - ```GOES_UP``` Can use <kbd><</kbd> to go up a level.
 - ```HARVESTED``` Marks the harvested version of a terrain type (e.g. harvesting an apple tree turns it into a harvested tree, which later becomes an apple tree again).
@@ -152,6 +152,7 @@ List of known flags, used in both terrain.json and furniture.json
 - ```toilet``` Either drink or get water out of the toilet.
 - ```trap``` Interact with a trap.
 - ```water_source``` Drink or get water from a water source.
+- ```workbench``` Craft items on the furniture, or continue an in progress craft.  Should be paired with a ```WORKBENCH1```/```WORKBENCH2```/```WORKBENCH3``` flag.
 
 ### Currently only used for Fungal conversions
 
@@ -165,6 +166,8 @@ List of known flags, used in both terrain.json and furniture.json
 ### Furniture only
 
 - ```BLOCKSDOOR``` This will boost map terrain's resistance to bashing if `str_*_blocked` is set (see `map_bash_info`)
+- ```WORKBENCH1```/```WORKBENCH2```/```WORKBENCH3``` This is an adequate/good/great workbench for crafting.  Should be paired with a workbench iexamine.
+
 
 ## Monsters
 
@@ -510,6 +513,7 @@ These branches are also the valid entries for the categories of `dreams` in `dre
 - ```EVENTURN``` Only on during even turns.
 - ```EXTRA_DRAG``` tells the vehicle that the part exerts engine power reduction.
 - ```FAUCET```
+- ```FLAT_SURF``` Part with flat hard surface (e.g. table).
 - ```FOLDABLE```
 - ```FORGE``` Acts as a forge for crafting.
 - ```FRIDGE``` Can refrigerate items.
@@ -576,6 +580,7 @@ These branches are also the valid entries for the categories of `dreams` in `dre
 - ```WASHING_MACHINE``` Can be used to wash filthy clothes en masse.
 - ```WATER_WHEEL``` Recharges vehicle batteries when in flowing water.
 - ```WINDOW``` Can see through this part and can install curtains over it.
+- ```WORKBENCH1```/```WORKBENCH2``` Craft items on the vehicle part, or continue an in progress craft.
 
 ## Ammo
 
diff --git a/src/mapdata.h b/src/mapdata.h
index b7b42d76f71de..4970721e73084 100644
--- a/src/mapdata.h
+++ b/src/mapdata.h
@@ -108,6 +108,7 @@ struct map_deconstruct_info {
  * EASY_DECONSTRUCT - Player can deconstruct this without tools
  * HIDE_PLACE - Creature on this tile can't be seen by other creature not standing on adjacent tiles
  * BLOCK_WIND - This tile will partially block wind
+ * FLAT_SURF - Furniture or terrain or vehicle part with flat hard surface (ex. table, but not chair; tree stump, etc.).
  *
  * Currently only used for Fungal conversions
  * WALL - This terrain is an upright obstacle
@@ -122,8 +123,7 @@ struct map_deconstruct_info {
  *
  * Furniture only:
  * BLOCKSDOOR - This will boost map terrain's resistance to bashing if str_*_blocked is set (see map_bash_info)
- * FLAT_SURF - This is required for full butchery and gives a morale bonus while eating.
- * WORKBENCH1/WORKBENCH2/WORKBENCH3 - This is an adequate/good/great workbench for crafting.  Should be paired with a workbench iexamine.
+ * WORKBENCH1/WORKBENCH2/WORKBENCH3 - This is an adequate/good/great workbench for crafting.  Must be paired with a workbench iexamine.
  */
 
 /*