In AutoCAD LT, use the INDEXCTL system variable on the command line and set its value to 2 for just a spatial index, or to 3 for both spatial and layer indexes.
V AutoCAD-u LT v ukazni vrstici uporabite sistemsko spremenljivko INDEXCTL in nastavite njeno vrednost na 2 (samo za kazalo prostora) ali na 3 (za kazalo prostora in kazalo risalnih ravnin).