parameters in function don't match with forward declaration

Rule "forwardparams" gives this warning when it finds that a function implementation has different parameters than its forward declaration.
For example:

function myfunction returns logical(input something as character) forward.

function myfunction returns logical:
    if something>"" then 
       return true.
    else 
       return false.
end function.

Why

Rule fortranoper searches for the use of Fortran-style operators like:
EQ, GT, LT, GE, LE, NE (for =, >, <, >=, <=, <>).

I know some people may like this or are used to this, but others don't.

undefined frame

The rule "defaultframe" gives this message when it finds instances of DISPLAY and UPDATE statements that are not using a previously defined frame.

Why use this rule?
This can be useful when you are trying to identify user interface components in your code base. It can also be helpful for applying standards.

Solution
Frames should be defined with either a DEFINE FRAME or FORMAT ... WITH statement.

No Preprocessors in include

(explanation what this rule does, should go here. I don't know what the rule does)

This is a contributed rule, which means it is not part of the standard Prolint setup but you can download it separately from the Subversion reporistory and save it in your local prolint/contribs/rules path.
See http://www.oehive.org/node/1150 for more information on contributed rules.

Actually this is just an experiment, belonging to the proposal which is described in http://www.oehive.org/node/1150

Traditional situation:
Up until Prolint release 73, Prolint supports two groups of rules: standard rules and custom rules. Standard rules are installed as part of the Prolint distribution. Custom rules don't come from the Prolint website; a custom rule is created by the Prolint user and never committed to the Prolint website and hence not available to other users.
When someone wants to share their custom rules, they have to be accepted by project admin (=Jurjen) and then wait until the next Prolint release.

New: Contributed rules