General ⇒ If and Character Recognition

[pjsantib]

Hi. I write a test for several levels. This test have common question for some of the levels. For years I separate the problems in several files and call them with an input, in different archives. Then I try to write one archive that contain all the problems and with an If-tree and a lot of booleans show the questions depending that level that I want in the output file.

I want to create a command that have input the levels (number) in which the problems appears separate by a line, a comma, a point, or some symbol, and when I compile the archive the output will be a document where only appear the problems of the level 2, for example, or if I want, show them all.

I really appreciate your help. Beforehand, thank you.