Thank you for the above replies, all beyond the call of duty!
Background info------due to unsupported original program I had to import the drawings into TC 2015 Des. and I think use a file type conversion. At the time I was very pleased that I could then read them again!
However, most of the original drawing was constructed from default settings and presumably 1:1 scale, so what puzzles me now is when I first open the drawing some lines use the grid but other no longer. Having investigated since your suggestions yes nearly all lines are snapped to grid but at such a small scale you can barely be sure. So from a snap to grid function OK but the settings have meant at a larger scale some identities are not snapped to graphics as I was hoping for. Being a fairly angular drawing most of the time snap to Grid is adequate.
Now I want to use the drawing again and modify and improve, my question is and now we have what is otherwise a good drawing can all the entities be brought to a suitable construction/layout scale in one quick fix where extending or shrinking lines could also be fixed to provide snap to graphics with out having to hunt for them. Hope I have used the correct terminology.
Alvin, checked settings in Drawing Aids re Running (Grid) Snaps and selected? Although Nearest on Graphic not so.
John, "Frequency" and make sure it is set to "1" yes. No only saved in TC 2015 apart from the original unsupported programs.
Dave, "Grid Origin Point" has always baffled me, so will have to work on that although I do at time struggle to find the answers in the Help manual, which unfortunately covers three programs.
My keyboard short cuts don't respond so I will also have to delve into that issue! (Windows 10) However, I'm not convinced that the Drawing Aids snap feature remains on because I have found it necessary to select from drop down menu options. Perhaps this is another failing of mine, lack of education!. Keep an eye on that, although constructing straight lines the snap error is soon apparent e.g. pixel steps. To be transparent I am self taught and have been in trial and error mode. This could mean the current settings may by now be different to when the drawing was first constructed or added to!
It is fast becoming obvious, my help for this drawing which is far from tidy needs "A select all" for both a snap to grid or graphic quick fix, if at all possible. Or is the drawing past it's sell by date for a magical fix?
I hope to succeed in attaching the drawing as requested which is simplified by forwarding only the circuit layer.
Apologies for all the waffle but if you have a solution without going to too much trouble I will be eternally grateful.
P.S. Sorry but the forum website will not allow me to upload a tct file type, so will have to look into how to resolve that one. Shame, could mean you will not be able to view the original in order to help me?