Entspy

Entspy is a program that lets you view and edit the entity properties of a compiled BSP map file (for Source Engine games such as HL2, CS:S and VtMB).

The program is useful for tweaking small entity properties (such as fog distance, etc.) without having to recompile a map. You can also use it to alter and add entities to the standard maps (such as increasing the number of spawnpoints).

walkthrough  showing how to add a spawnpoint to a map using Entspy.

Downloading and Installing

Entspy can be downloaded here   . It is a Java program, and requires the Java Runtime Environment 1.5.0