1 03/09/76 delete_text, dt
 2 
 3 Function:  deletes one or more lines of temporary text.
 4 
 5 
 6 Syntax:  dt first_line {last_line}
 7 
 8 
 9 Arguments:
10 first_line   line number of the first line to be deleted.
11 last_line   line number of the last line to be deleted;
12 if omitted, only the first line is deleted.
13 
14 
15 Notes:  The first_line and last_line do not have to appear in the
16 text, but the range specified by them must contain at least one line.