cl_crosshair_scale
Sets the resolution to scale the crosshair to. Takes effect when 
  cl_crosshair_style
 is 0.
Sets the resolution to scale the crosshair to. Takes effect when 
  cl_crosshair_style
 is 0.
Toggles whether crosshair scales to the resolution defined in 
  cl_crosshair_scale
. Takes effect when 
  cl_crosshair_style
 is 0.
Sets the length of a crosshair line. Takes effect when 
  cl_crosshair_style
 is 1 or 2.
Sets the crosshair style. CS:S = 0, User CVars = 1, Custom VTF = 2.
Toggles the T style crosshair.
Sets the thickness of a crosshair line. Takes effect when 
  cl_crosshair_style
 is 1.
Whether to try and replace error textures with more meaningful ones for gameplay (see also 
  mat_error_texture_advanced_basetexture
).
0: Off, default error texture
1: Base color based on VRAD reflectivity data applied to texture specified in mat_error_texture_advanced_basetexture
2: Same as 1 but also replace water, grates and glass with meaningful textures
Which texture should be used as a base for reflectivity-based error textures (see 
  mat_error_texture_advanced
).
mat_error_texture_advanced_basetexture "white"
mat_error_texture_advanced_basetexture "dev/reflectivity_60"
Replace every non-translucent texture with error texture.
surf_utopia_njv with mat_error_texture_replace set to 1
Error texture to use on world geometry.
	
0: Unlit purple error texture
	
1: Grey lightmapped error texture