single XSH2 command or a block of XSH2 commands

indirect call to a user-defined routine (macro)

sub-routine declaration

execute a given block of commands

evaluate given expression as XSH commands

exit XSH2 shell

loop iterating over a node-list or a perl array

if statement

conditionally include another XSH2 source in current position

include another XSH2 source in current position

iterate a block over current subtree

immediately exit an enclosing loop

start the next iteration of an enclosing loop

restart an iteration on a previous node

restart the innermost enclosing loop block

return from a subroutine

switch into normal execution mode (quit test-mode)

process selected elements from an XML stream (EXPERIMENTAL)

do not execute any command, only check the syntax

throw an exception

try/catch statement

undefine sub-routine or variable

negated if statement

simple while loop