Keyboard Devices
AreYouSure          Funct Print "Are you sure" and waits for Y or N.
CKbdStateGlbls      Class class CKbdStateGlbls
DisableMouse        Funct {
EnableMouse         Funct {
GetChar             Funct Waits for non-zero ASCII key.
GetDate             Funct Prompt user for date expression. (Use Now() if you want current time.)
GetF64              Funct Prompt user for F64 expression.
GetI64              Funct Prompt user for I64 expression.
GetKey              Funct Waits for MSG_KEY_DOWN message and returns ASCII.
GetS                Funct Prompt into fixed length string. Size must include terminator.
GetScanCodeEntry    Funct {
GetStr              Funct Returns a MAlloc()ed prompted string. See Flags.
KbdCmdFlush         Funct {
KbdCmdRead          Funct {
KbdCmdSend          Funct {
KbdModLEDs          Funct Modifies upper 5 keyboard LED bits
KbdMsCmdAck         Funct {
KbdMsEvtTime        Funct Timestamp of last key or mouse event.
KbdPktInject        Funct Inject a 1 or 2 byte keyboard packet from an external non-PS/2 source
KbdTypeMatic        Funct Set speed of repeated keys.
KeyStateRst         Funct Clears state of all keys in key_state and sc_state
MsHardGetType       Funct {
MsHardHndlr         Funct {
MsHardRst           Funct {
MsPktInject         Funct Inject a mouse packet from an external non-PS/2 source
MsRaw               Funct Places mouse in "raw" mode, button presses will not go to windows manager when true
MsRawRst            Funct {
PressAKey           Funct Print "Press a key" and wait for non-zero ASCII key.
ScanChar            Funct Checks for MSG_KEY_DOWN and returns 0 immediately if no key.
ScanKey             Funct Checks for MSG_KEY_DOWN and returns FALSE immediately if no key.
SetScanCodeEntry    Funct {
YorN                Funct Wait for user to answer Y or N.
kbd                 GlbVar CKbdStateGlbls kbd;
key_state           GlbVar U8 *key_state, *sc_state;
sc_flags_state      GlbVar I64 sc_flags_state;
sc_state            GlbVar U8 *key_state, *sc_state;


                            
Keyboard Devices/System
The editor mostly stays in a GetKey()/PutKey() loop.  The putkey portion is 
where keys are acted-upon.  TempleOS has a chain of putkey hndlrs in a 
Circular Queue with priorities.  The highest priority hndlrs can choose to 
terminate handling, otherwise, the keys get sent on down the chain.

KeyDevAdd() defines a putkey device with a priority.  "Device" might be a 
misnomer.  Currently, the following are defined:

Priority    Hndlr
---------- ---------
0x20000000 MyPutKey() user hndlr
0x40000000 KDInputFilterPutKey() for In(), InStr(), and InFile() handling.
0x60000000 KDRawPutKey() nonwindowed direct to video mem debug output. 
0x80000000 KDDocPutKey() standard document cmds

Since handling individual keys is slow, TempleOS supports PutS() as well.  If no 
puts hndlr is defined, individual keys are sent.

CDoc.user_put_key and CDoc.user_put_s are call back routines which offer some 
neat tricks.  See ::/Apps/Psalmody/JukeBox.HC.  There is a var CDoc.user_put_dat
a which gets passed to them.

CtrlAltCBSet        Funct Set callback for <CTRL-ALT-letter>.
KeyDescSet          Funct Call this from key hndlr to report desc in KeyMap().
KeyDevAdd           Funct Places hook in StdOut chain. See Keyboard Devices.
KeyDevRem           Funct Remove StdOut hook and free.