# Directives

SET_PARAM | Set System Parameters

## Format

SET_PARAM [param_list]
Where:

param_list | List of mnemonics and optional values for setting various system parameters for your PxPlus environment.

## Description

Use the SET_PARAM directive to set system parameters. These parameters set internal options in PxPlus. For a list of possible parameters that can be set, see System Parameters.

You can find the current value or state of these parameters using the PRM( ) function and the PRM system variable.

## See Also

PRM PxPlus Parameter Settings
PRM( ) Return Parameter Value

## Example

print pgn
set_param 'OP'
print pgn
->run C:\PVX\MANUAL\TST\TST_EGS TST_EGS
set_param 'AH' ! Switches Alternative Heading On
set_param -'AH' ! Minus sign switches 'AH' Off
set_param 'BY'=0 ! Sets the Base Year to Julian calendar base
set_param 'BY'=1970 ! Resets Base Year to default

You can use a Boolean value to reset a switch:

set_param 'AH'=0 ! Switches 'AH' Off
->?prm('AH')
0