Help with ‘sh-mode’

‘C-M-q’ (prog-indent-sexp)
  Indent the expression after point.

‘C-c :’ (sh-set-shell)
  Set this buffer's shell to SHELL (a string).

‘C-c C-z’ (sh-show-shell)
  Pop the shell interaction buffer.

‘C-c C-d’ (sh-cd-here)
  Change directory in the current interaction shell to the current one.

‘C-c C-n’ (sh-send-line-or-region-and-step)
  Send the current line to the inferior shell and step to the next line.

‘C-c C-x’ (executable-interpret)
  Run script with user-specified args, and collect output in a buffer.

‘C-c +’ (sh-add)
  Insert an addition of VAR and prefix DELTA for Bourne (type) shell.

‘C-c C-\’ (sh-backslash-region)
  Insert, align, or delete end-of-line backslashes on the lines in the region.

‘C-c >’ (sh-learn-buffer-indent)
  Learn how to indent the buffer the way it currently is.

‘C-c <’ (sh-learn-line-indent)
  Learn how to indent a line as it currently is indented.

‘C-c =’ (sh-set-indent)
  Set the indentation for the current line.

‘C-c ?’ (sh-show-indent)
  Show the how the current line would be indented.

‘C-c C-c’ (sh-case)
  Insert a case/switch statement.  See `sh-feature'.

‘C-c C-f’ (sh-for)
  Insert a for loop.  See `sh-feature'.

‘C-c TAB’ (sh-if)
  Insert an if statement.  See `sh-feature'.

‘C-c C-l’ (sh-indexed-loop)
  Insert an indexed loop from 1 to n.  See `sh-feature'.

‘C-c C-o’ (sh-while-getopts)
  Insert a while getopts loop.  See `sh-feature'.

‘C-c C-r’ (sh-repeat)
  Insert a repeat loop definition.  See `sh-feature'.

‘C-c C-s’ (sh-select)
  Insert a select statement.  See `sh-feature'.

‘C-c C-t’ (sh-tmp-file)
  Insert code to setup temporary file handling.  See `sh-feature'.

‘C-c C-u’ (sh-until)
  Insert an until loop.  See `sh-feature'.

‘C-c C-w’ (sh-while)
  Insert a while loop.  See `sh-feature'.

‘C-c (’ (sh-function)
  Insert a function definition.  See `sh-feature'.

‘=’ (sh-assignment)
  Remember preceding identifier for future completion and do self-insert.

‘C-M-x’ (sh-execute-region)
  Pass optional header and region to a subshell for noninteractive execution.

‘<remap> <forward-sentence>’ (sh-end-of-command)
  Move point to successive ends of commands.

‘<remap> <backward-sentence>’ (sh-beginning-of-command)
  Move point to successive beginnings of commands.

‘<remap> <delete-backward-char>’ (backward-delete-char-untabify)
  Delete characters backward, changing tabs into spaces.