• SKIP 1 0          Reload current line
• SKIP 1 1          Load next line
• SKIP 1 -1         Load previous line
• SKIP 1 999      Skip out of current file to next file
• SKIP 1 -999     Skip out of current file to previous file
• SKIP 1 $#        Go to designated line in file (empirical value)
• SKIP 1 #          Skip designated number of lines forward in file
• SKIP 1 -#         Skip designated number of lines backward in file

• EXTEND 1 0         Stay on current line (until another command is issued)
• EXTEND 1 1         Go to and stay on next line 

Note:   an extend will stay on the designated source until a skip or another extend command is issued.