PICO ("Pine Composer") was designed for use with the Pine mail reader 
package for networks, but can also serve as a stand-alone message editor.

It is always in Insert mode (as opposed to Overstrike), and word wrap is 
always on.

Press Ctrl-G to view the help screens.  The function keys do not seem to
work as specified in the help screens--for example, F1 does not display
the help screen, and F6 does not bring up the "where is" (text search)
function.  Use the specified control keys instead. 

Despite reference to a spell checker in the help screen, that function
seems to be missing. 

If any text is selected (highlighted), Ctrl-K will delete it.  If no text 
is highlighted, then Ctrl-K will delete the current line.