Layers file is a text file (ASCII) with extension .lay that can be edited from program using command TopoCfg section Files or directly from Windows.

In this file, layers allocated for program are saved. Layers saved in this file are automatically created in drawing when loading program.

Layers from this file can be allocated for:

-      points (PCT)

-      parcels when applying command arr (ARR)

-      graticule (CAR)

-      plan layout with border and cartouche (PLAN)

-      images when transforming or changing format (IMG)

-      fields three-dimensional model (M3D)

-      contour levels (CNT-M3D)

-      elevations when applying command DimPl (DIM)

-      volume calculation of 3D bodies (VOL)

-      another layers that can be introduced by user (OTHER)

Layers allocated for points must exist and to be the following in order:

-      Codes;

-      Elevations;

-      Names;

-      Leader lines;

-      Symbols;

-      Overlapped texts.

Layers allocated for areas (ARR) must be in order accordingly to parcel type that is introduced when applying command Arr. For example, you can introduce in order the following layers allocated for parcels:

-      Constructions;

-      Transport;

-      Networks;

-      Free.

Layer can be used or not in drawing, you can choose layer’s color and you can set layer on or off in drawing. If layer is not used it will not be created in drawing.

For layers that are not allocated for points setting On/Off is considered only when layer is created by program.

Layers defined in this file are saved inside drawing (dwg).