Sdlx

I would like to know what does it mean when a segment turns purple and what does it mean?
It only happened to me twice, but never knew why or how did it happened.
Can anyone help me?

This is what the target segment colours mean:

Gold indicates a 100% TM match. This segment has been translated with a 100% TM match on both text content and formatting. It should require nofurther action from you.

Green indicates a fuzzy (between 75% and 99%) TM match. This segment has been translated with a fuzzy match and requires editing. No TM match was found for this segment. It requires translation.

Blue indicates a confirmed segment. A confirmed segment is one where you consider the translation to be complete. The segment colour changes to blue when you press the Enter button to exit the segment. The TM can only be updated with the contents of confirmed segments

Purple indicates that you have applied machine translation to the segment. Machine translations appear in the TM Results window at the end of the list of available TM matches.

This is what the source segment colours mean:

Green indicates a formatting mismatch between the original language segment and the translated version. Use the format painting tool to copy formats from one segment to the other.

Grey is the standard colour for a source language segment.

Purple indicates that you have deleted formatting tags in the target segment.

Thank you so much Michelle!!
It only happened on the source column and it was a long time ago, so it probably was some sort of typo or mistake that I made.
But no one ever could explained.
Thanks a lot !!!