Counterpart to the on_timeout: attribute.
Sets the on_timeout "attribute" of the parent procedure.
set l []
sequence timeout: '1s'
push l 0
on_timeout (def msg \ push l "$(msg.point):$(msg.nid)")
stall _
push l 2
push l 3
Ends up with [ 0, 'cancel:0_1', 3 ]
in the variable l
. The on_timeout
is set on the "sequence".