The new TEXTLAYER system specifies a default layer for new text and multiline text objects.
Currently, AutoCAD-based products provide system variables that each control a layer override for new dimensions, hatches, centerlines, center marks, and xrefs. For example, you can specify a layer for hatches regardless of the current layer. A new system variable, TEXTLAYER, extends this capability to text and multiline text objects.
Values other than the "." (use current) value override the current layer (CLAYER system variable).
TEXTLAYER - Specifies a default layer for new text and multiline text objects in the current drawing.