Global Layer Visibility Mask

Synopsis

&LYRVIS(layer number[,IFERR,label:])

Description

Allows you to verify/change the global visibility of a layer.

If you specify the work layer, the system ignores it. The work layer must always be visible.

NOTE: Setting a layer not visible automatically sets it not selectable.

Characteristics

Read/Write - Number - [1,2]

Constant Values

1 = &YES (layer is visible)
2 = &NO (layer is not visible)

Parameters

Parameter

Description

layer number

The layer number of which you wish to change or read the global visibility.

IFERR,label:

Specifies a label to which program execution jumps if an error occurs. Possible errors include: invalid layer number; value not within valid limits.

&YES

GPA constant indicating that the specified layer is to be made visible.

&NO

GPA constant indicating that the specified layer is to be made not visible.

Parameter	Description
layer number	The layer number of which you wish to change or read the global visibility.
IFERR,label:	Specifies a label to which program execution jumps if an error occurs. Possible errors include: invalid layer number; value not within valid limits.
&YES	GPA constant indicating that the specified layer is to be made visible.
&NO	GPA constant indicating that the specified layer is to be made not visible.