I do contract drafting for millwork and find the timestamp very useful in keeping track of my estimates.
My wish would be having a pause function to stop the clock and possibly having it re-start with the first mouse movement.
This has been discussed and many of us (myself included) agree with you. Personally, I would like the 'pause' function to be automatic (when the TurboCAD window is not active; when there have been no changes since the last AutoSave; when the system Screen Blanker is active, etc.).
As it is, you can 'pause' the clock by saving and closing the file.
TC Pro Platinum 2017, 2016 & 2015 (all with LightWorks) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1