General syntax rules

Syntax is case insensitive. For example, the identifiers abcd, ABCD, and aBCd are treated as identical.
Element names, or identifiers, can contain up to 40 characters.
All elements appear in the same general format:

      [keyword identifying element] <modifiers for element> [element name];

      [keyword identifying element] <modifiers for element> [element name] {
      	<element content>
      	< properties := property value >
      }

Every statement ends in a semicolon. For example:

    Opacity := 90;

Not every property, setting, or value must be specified. If a setting is not specified, then its default value is used.
Multiple statements can exist on the same line when they are separated by a semicolon. For example:
Bound properties appear in the general format:

    Opacity := 90; ^Visible := true;
      property := "
<Initial_Value>" -> "
<Bound_Value>"

  
Text := "Text Display" -> "::Local:HMIDevice.AutoLogoff.RemainingTime";

Keywords cannot contain embedded spaces.
The case of characters is not significant in keywords. For example, the keywords
FOR
and
for
are syntactically the same.
Keywords cannot be used for any other purpose; for example, as variable or element names.
Certain keywords can be used as variable or element name only if preceded with a caret (^). For example, you could use the keyword
^Screen
as an element name.

action
addongraphic
alarm
and
aoi
artifact
banner
behavior
commanddefinition
const
continuous
controller
converge
datalog
datalogentry
dev
directedlink
diverge
enum
event
extends
extern
false
fbd
function
graphicelement
gsv
gsv_only
gsvssv_able
gsvssv_only
hi
hidden
hide
hihi
inout
input
instruction
ld
lo
lolo
mathfunction
motion
namespace
nullable
output
parameterconnection
periodic
phase
popup
program
property
required
rll
roc_neg
roc_pos
routine
safety
screen
selectbranch
sfc
shortcut
show
simulbranch
ssv
ssv_only
st
statedefinition
statetabledefinition
step
stopstep
struct
stx
tag
task
textbox
thiscontrollerapp
thisprogram
thisroutine
thistask
transition
triggerbasedefinition
trip
true
type
union
unsupported
userproperties
using
view
viewfolder
viewproject
visible
wire

by
case
else
elsif
end_case
end_for
end_if
end_repeat
end_while
exit
for
if
mod
nod
of
or
repeat
then
to
until
while
xor