The strings from sections option creates strings by joining the common named points on successive 4d strings (usually generated as sections).
There really isn’t much to this option.
It simply finds the 4th dimemsion on the section which is the name of the Cut string typically and joins these points together longitudinally to create a model of strings with the name of those individual vertices from the cross sections.
To view the panel, Use: Design =>X-Sections =>Strings from sections