I need to label the simple-features/shapes in a Well-known text file. Is there some best practice on how to achieve this? Should I just keep the labels as separate entities linked to the WKT or is it possible to add this to the WKT itself? Thanks.
As far as I know WKT doesn't really support any kind of label as it just represents the geometry itself. What you could do is however just store it as comma separated list eg:
You should then be able to display this with X GIS program. QGIS can open and display text files with a comma separated list of WKT objects using the Delimited Text plugin.