sosensible: Are you aware that:
1/ Your message makes little sense ?
2/ You are posting in the "Open topic" forums, when actual help requests and technical issues considering Construct2 are to be posted in the "How do I" forum ?
3/ There is a manual ?
Is in preview
True when running the project from a preview in Construct 2, and false when running after being exported. Useful to add debug or diagnostic features for previewing only.