picture-tab-search
picture-tab-search is an interactive compiled Lisp function in `picture.el
'.
(picture-tab-search &optional ARG)
Move to column beneath next interesting char in previous line.
With ARG move to column occupied by next interesting character in this
line. The character must be preceded by whitespace.
"interesting characters" are defined by variable `picture-tab-chars'.
If no such character is found, move to beginning of line.