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[ 3 ] System Variable
A system variable is used to check the system status. Since the variable name
uses words reserved by the system, the variable name does not have to be
declared. The following are system variables.
CURJNT CURPOS CURTRN CURFIG CURACC CURDEC CURJDEC
CURJSPD CURSPD DESTJNT DESTPOS DESTTRN DATE$ TIME$
TIMER ERL ERR
7.5.2 Function
A function is used to obtain the operation result of the designated value
(argument) using the operation method determined beforehand. There are
some functions which do not have arguments depending on the function type.
In the PAC language, there are a function for handling pose and vector data, a
function for handling numeric value data, a function for handling character
string data and a user defined function.
For function commands, refer to Chapter 15 “Command Reference”.
7.5.3 Label
A label expresses the statement position in a program. The destination
position of a branch can be expressed with a label.
If the label is set using a meaningful name, the program will be easy to
understand.
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