See Frequency Generator 2.6 at http://www.softpile.com/Education/Mathematics/Review_21743_index.html
Frequency Generator contains 3 Generators, you can choose between
Sine, Square, Triangle, SawtoothNeg, SawtoothPos, Pink Noise
Total Recall, save all setting into a Project file.
Trigger Mode is certainly for the Oscilloscope.
Trigger Level +50;-50 Mode Up Flang and Down Flank.
Frequency from 0,01 Hz up to 22050 Hz.