diff --git a/Resources:-spread-functions.md b/Resources:-spread-functions.md
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 Resource **spread models** are applied to check whether resource can or cannot be placed in a cell. Fantasy Map Generator allows to create custom spread models, but it requires some understanding on how models work.
 
 # Technical info
-Technically spread models are functional expressions evaluated for each cell to return `true` or `false`. If `true` is returned, the resource can be placed in the cell. The expressions are valid JS, you can use logical operators (`!` for not, `||` for OR, `&&` for and, etc.) and other features.
+Technically spread models are expressions evaluated for each cell to return `true` or `false`. If `true` is returned, the resource can be placed in the cell. The expressions are valid JS functions, you can use logical operators (`!` for not, `||` for OR, `&&` for and, etc.) and other features.
 
 However the function is limited to a number of build-in functions. These functions make models syntax easier to read and write:
 * `random(number)`: percentage of true, e.g. `50` will return true in 50% of cases