Commands

at	Position the window cursor (character positioning)
begin_mark	Begin a transaction (transaction logging system)
bell	Send the “Sound Bell” sequence
break	Terminate a loop, or the current case of a switch construct
breakif	Terminate an if construct
caption	Display a message on the caption line
chain	Terminate current process and replace it with another
charmove	Move a window or object (character positioning)
check	Check that a record buffer contains a record
check #	Check if bytes are available in a sequential file, socket or pipe
checkevents	Check if messages are pending
checkpid	Check existence of a specified process
clear	Clear data, controls and buffers
clearall	Clear every control in the window and the window background
clearbatch	Clear a batch buffer
cleardata	Global clear, but without unlocking records or files
clearkey	Disable a programmed function key
close	Close a file, menu, listbox, database or cursor
closefile	Close a file, resetting file position and releasing cached information
close #	Close a sequential file, socket or pipe
commit_mark	Commit a transaction (transaction logging system)
continue	End current iteration of a loop and start the next
crash	Force a program exception
create	Create or recreate a window or control with its original properties
delete	Delete a record from a file
destroy	Destroy a window or object
dialog	Start a dialog
disable[_tabstop]	Disable a window or control from input and focus
display	Display the current state of an object
do	Do statements and repeat while a condition is true
draw hline|vline	Draw a horizontal or vertical line
draw rectangle	Draw a rectangle
enable[_tabstop]	Enable a window or control so that it can receive input focus
end	End a menu option or report statement set
error	Display an error message
exec	Execute a child process
exit	Terminate the current program
fill rectangle	Flood fill a rectangular area of the screen
find[u]	Find and read a record by full or partial key value
flush	Flush file data to disk
flush #	Flush pending output to a specified channel
flushall	Flush all sequential and keyed files to disk
flush screen	Flush pending output to the screen
for	Repeat statements with initialisation and control
get[field] #	Read data into fields from a sequential file, socket or pipe
gosub	Call a subroutine
goto	Transfer program control to a specified line
hide	Hide a window or object, removing it from display
if	Conditionally execute statements
info	Display an information message
input	Input into textboxes and buttons in a specified order
insert	Insert a new record into a keyed file
match[u]	Read next record matching current search data
maximise	Maximise a window
minimise	Minimise a window (to taskbar or icon)
move	Move a window or object (pixel positioning)
move cursor to	Position the window cursor (character positioning)
next[u]	Read the next record in a file
nextkey	Read key data only from the next record in a file
on	Configure a function key to call a ring menu option
on global	Configure a function key to transfer program control
on interrupt	Specify function/subroutine to be called if program is interrupted
on local	Configure a function key until current menu option ends
on ole_error	Register function to be called if an OLE control error occurs
open	Open a keyed file, menu or listbox
open #	Open a sequential file, socket or pipe
openfile	Open a keyed file
preserve	Preserve a record buffer from global clearing
prev[u]	Read the previous record in a file
prevkey	Read key data only from the previous record in a file
prompt	Display user prompt, or await keypress before continuing
put	Write formatted data to a window
put[field] #	Write data to a sequential file, socket or pipe
raise	Raise a window or control to the top
read[u]	Read a record using exact key data
readkey	Read key data only from a record using exact key data
readlock	Lock a file from update by all users
redraw	Redisplay the screen
refresh_cache	Client cache service refresh_cache command
restore	Restore a minimised window to its previous size and position
return	Return from a subroutine or function
rewind	Reposition a file or secondary index at its start
rewind #	Rewind a sequential file to the beginning
rollback_mark	Undo database updates (transaction logging system)
save_text	Save text typed into a textbox before a function call
scroll	Scroll a listbox or table vertically to a specified position
seek #	Position a sequential file at a stated position
setcol	Set the default subscript for the first dimension
setdim4	Set the default subscript for the fourth dimension
setfocus	Specify control to receive input focus when current function returns
setpen	Set the default pen for put commands
setplane	Set the default subscript for the third dimension
setrow	Set the default subscript for the second dimension
show	Show a window or control, returning it to display
sleep	Suspend the program for a specified number of seconds
stopsound	Stop a sound from playing
switch	Choose statements to be executed according to the value of a field
sync_indexes	Synchronise the current file position of all secondary indexes to the current main index file position
testkey	Test for a record with a specified key
unlock	Unlock a record or file
unpreserve	Return a record buffer to global clearing status
wait	Suspend the program and await an alarm interrupt
wakeup	Send an alarm interrupt to a program
while	Repeat statements while a condition is true
wind	Position a file or secondary index at the end
wind #	Position a sequential file at the end
write[kl]	Write a record back to a file
writelock	Lock a file from update by other users

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