The Up Arrow key moves the cursor up one line. If the cursor is already on the top line, it stays on the top line.
You can enter background text in the Parameter Picture screen by typing the desired text. If you type over old background text, the new text replaces the old. You cannot type background text over a parameter field. You must either move the field or DELETE the field.
Table 8-13 lists the special keys available in the Parameter Picture screen.
Table 8-13 Parameter Picture Special Keys
Name Key Function
Up Arrow The Up Arrow key moves the cursor up one line. If the cursor is already on the top line, it stays on the top line.
Down Arrow 
The Down Arrow key moves the cursor down one line. If the cursor is already on the bottom line, it stays on the bottom line.
Left Arrow 
The Left Arrow key moves the cursor to the left one column. If the cursor is already in the left most column, it stays in the left most column.
Right Arrow 
The Right Arrow key moves the cursor to the right one column. If the cursor is already in the right most column, it stays in the right most column.
Tab The Tab key moves the cursor to the next tab stop. Tab stops are every eight columns.
Return The Return key moves the cursor to the beginning of the next line.
Home <F1> The Home key moves the cursor to the upper left corner of the screen.
Erase The Erase key (usually Back Space) back spaces and erases the last character typed.
Insert Line The Insert Line key inserts a blank line at the current cursor position. You cannot move a parameter field off the bottom of the screen with the Insert Line key.
Delete Line The Delete Line key deletes a line at the current cursor position. You cannot delete a line containing a field with the Delete Line key.
Insert Char The Insert Char key inserts a blank at the cursor position and shifts the rest of the line to the right. You cannot move a field off the end of a line with the Insert Char key nor can you insert a character immediately following a field.
Delete Char The Delete Char key deletes a character at the cursor position and shifts the rest of the field to the left. You cannot delete a field with the Delete Char key nor can you delete a character immediately before or after a field.
Interrupt The Interrupt key (usually Del) forces menudef to quit immediately without saving the new menufile.
Table 8-14 describes the function keys available in the Parameter Picture screen:
Table 8-14 Parameter Picture Function Keys
Name Key(s) Function
GOLD <F1> Prefix for additional functions.
UPDATE <F4> Update the field the cursor is on.
ADD <F6> Add a field at the cursor position.
SWITCH <F7> Switch to this parameter form's Choice Description form.
EXIT <F8> Exit menudef.
DELETE <F1>D Delete the field the cursor is on.
UNDELETE <F1>U Undeletes (restores) the last deleted field to the cursor position.
HELP <F1>H Display help information.
REFRESH <F1>R Redisplay this screen.