Add a text section to this help object. The
section argument is a table
text fields, both of which should be strings.
Add keystroke information to this help object. The
key_defs argument is a
dictionary that contains the keystroke as the key and the help text as the value. Here is an example:
help_context\add_keys ctrl_w: 'close this window' 'cursor-down': 'select next element'
Note that the key can be either a keystroke name such as
ctrl_w or a command
name such as
'cursor-down'. When a command is specified, the displayed text
contains the shortcut keystroke associated with that command.
Returns an ActionBuffer containing all the help information added to this object.
Merge all help information from
other_help_context into this one.