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-.TH VT220KEYS 1 
-.UC 4
-.SH NAME
-vt220keys \- define SHIFTED function keys on VT220 terminal
-.SH SYNTAX
-.B vt220keys
-[
-.B \-cil
-]
-[ keyname keystring ] ...
-.SH DESCRIPTION
-.I Vt220keys
-sets up a "vt220 terminal" in vt200 mode to allow user
-definition of the SHIFTED function keys. Each
-\f2keyname\f1 specified on the command line will be loaded with
-the corresponding \f2keystring\f1.  
-A \f2keyname\f1 is one of the  following "words":
-F6 F7 F8 F9 F10 F11 ESC F12 BS F13 LF F14 HELP DO F17 F18 F19 F20.  
-\f2Keystrings\f1
-must be quoted if spaces, tabs, or shell metacharacters are included. 
-.PP
-.B Vt220keys
-expects to receive some combination of option flags and/or 
-argument pair(s), otherwise a usage message
-is printed.
-.PP
-The options are:
-.TP
-.B \-c 
-Clears all SHIFTED function key definitions before setting them to user
-defined strings.
-.TP
-.B \-i
-Read the initialization file 
-.I $HOME/.vt220rc
-for SHIFTED function key definitions.  This is done before any
-argument pair specified on the command line is processed.
-Each line in the file must consist of two fields (separated by spaces
-or tabs) where the first field is the 
-\f2keyname\f1 and the second field is the \f2keystring\f1.
-The second field extends to the end of the line, thus a
-\f2keystring\f1
-may include spaces or tabs.  A newline (return) may be specified
-within the string by using the C Language notation for newline (\\n).
-.TP
-.B \-l 
-Locks the function keys from further definition.  
-Locking occurs after processing the initialization file (if the "i"
-option is specified) and any argument
-pairs.
-The only way
-to unlock is by turning the power off.
-.SH EXAMPLES
-vt220keys -ci
-.br
-vt220keys F6 'nroff -ms '
-.br
-vt220keys -i F20 'cc -O -c '
-.br
-vt220keys -l HELP man
-.SH "OTHER FEATURES"
-Pressing the function keys without using the shift key, generates
-a string of characters.  With
-\f2csh\f1(1) this string can be aliased to some command.  For example:
-.br
-	alias ^[[17~ "ls -CR | more"
-.br
-where ^[[17~ is what is generated by pressing the F6 key.  Therefore
-F6 can perform two commands, depending if pressed with/without the SHIFT
-key.
-.PP
-.B Vt220keys
-can be called from your .login or .profile file.  Typically an user
-will create a initialization file and include a line like
-.br
-	vt220keys -ci
-.br
-OR
-.br
-	vt220keys -cil
-.br
-in the above mentioned files.  This way the SHIFTED function keys
-will be set to your favorite commands when logging in.
-.SH CAVEATS
-If the SHIFTED function keys are unlocked, redefinition of a SHIFTED 
-function key will rewrite the old string.
-.PP
-There are 256 bytes available for the SHIFTED function keys.  Space is 
-supplied on a first-come/first-serve basis.  After the 256 bytes are
-used, you can't define any more keys unless space is cleared.  This
-can be done by redefining a key to contain a string of fewer bytes. 
-.PP
-All key definitions are stored in volatile RAM, and are lost when
-terminal power is lost.
-.PP
-The ESC key (unshifted) no longer generates the proper escape character.  This
-is of particular importance since many editors require use  of the
-ESC key.  Here are some available alternatives:
-.sp
-.in +.5i
-The escape character can be generated by typing ^[ (control-[).
-.sp
-Use 
-.B vt220keys
-as follows (note ^[ is control-[)
-.br
-.in +.5i
-vt220keys ESC '^['  
-.in
-.br
-This will require you
-to press the SHIFT key and ESC to generate the escape sequence.
-.sp
-Some editors, allow other character(s) to be substituted for the 
-escape character. For example with 
-.B emacs
-include this line in your .emacs_pro:
-.br
-    (bind-to-key "ESC-prefix" "\\033[23~")
-.br
-Thus when the ESC key is pressed, emacs will allow the characters
-generated (^[[23~) to perform the same function as the escape
-character.
-.in
-.SH FILES
-$HOME/.vt220rc	\- initialization file
-.SH "SEE ALSO"
-VT220 Programmer Reference Manual
-.br
-VT220 Programmer Pocket Guide
-