The level.lst file determines level based benefits.
Variables Used (x): Number (Level)
Variables Used (x): LEVEL
What it does:
LEVEL
    in conjunction with a formula on the
    MINXP
    tag that utilizes the
    
     LEVEL
    
    variable will determine the level
benefits.
   Example:
   LEVEL:1 <tab> MINXP:0 <tab>
CSKILLMAX:1 <tab> CCSKILLMAX:1
  
Identifies the minimum experience points amd maximum class and cross-class skill ranks for first level.
   LEVEL:LEVEL <tab>
MINXP:(LEVEL*LEVEL-LEVEL)*500 <tab> CSKILLMAX:LEVEL+3
<tab> CCSKILLMAX:(LEVEL+3)/2
  
Establishes the standard level progression by experience points as used in the R/SRD.
Tag Name: MINXP:x
Variables Used (x): Number or Formula (Experience Points)
What it does:
LEVEL:LEVEL
    tag,
    MINXP
   Examples:
   MINXP:(LEVEL*LEVEL-LEVEL)*500
  
The standard formula for level progression for the R/SRD.
Tag Name: CSKILLMAX:x
Variables Used (x): Number or Formula (Skill Rank)
What it does:
Sets the maximum rank for class skills.
Examples:
   CSKILLMAX:LEVEL+3
  
The standard formula for maximum class skill ranks for the R/SRD.
Tag Name: CCSKILLMAX:x
Variables Used (x): Number or Formula (Skill Rank)
What it does:
Sets the maximum rank for cross class skills.
Examples:
   CCSKILLMAX:(LEVEL+3)/2
  
The standard formula for maximum cross-class skill ranks for the R/SRD.