Control

assign		Assign a new value to a control variable.
break		Terminate loop execution.
catch		Catches exceptions that were thrown in the preceding try block.
comment		Add a comment of one line to the program.
continue		Skip the current loop execution.
else		Alternative of conditional statement.
elseif		Conditional statement with alternative.
endfor		End of for loop.
endif		End of if command.
endtry		Ends a block where exceptions are handled.
endwhile		End of while loop.
exit		Terminate HDevelop.
for		Starts a loop block that is executed for a fixed number of iterations.
if		Conditional statement.
ifelse		Conditional statement with alternative.
insert		Assignment of a value to a tuple element.
repeat		Start of repeat..until loop.
return		Terminate procedure call.
stop		Stop program execution.
throw		Throws a user-defined exception or rethrows a caught exception.
try		Starts a program block where exceptions are detected and caught.
until		Continue to execute the body as long as the condition is not true.
while		Starts a loop block that is executed as long as the condition is true.