Is the playback control of sequence. More sequences can be played at the same time.

Is a list that can contain up to 20 sequences that are played back in the Cue window, Cuelist buttons or Submasters.

Fixture Creator is a standalone program which is part of the FreeStyler installation.
It is as the mane says used to create or edit fixtures that are used by FreeStyler.
Fixture Creator is located in the same folder as Freestyler and are started from the desktop or the “Start” menu → FreeStyler program folder.

This is the raw fixture configuration files that Freestyler uses.

When controlling conventional lights, you normally use HTP.

Under some circumstances you can use LoTP on any type of lights for some 'special' functions.

When controlling intelligent lights, you normally use LTP.

This is when the manual fixture control is used though sequences are played back.
The Override systems in freestyler or the Blue triangle

== Pan / Panning ==
This in general the sidewise, left / right, movement of light in fixtures like Scanners and Moving heads.

This is a packed fixture file and this file contain all settings,images, color and gobo images for the fixture.
See: Fixture Creator - How to backup and exchange fixtures

Is a number of scenes where each change in the fixture control is recorded step by step.

Sequence/Chase

Is the playback control for cuelist

Step/scene

This in general the up / down movement of light in fixtures like Scanners and Moving heads.