setting "enhanced" for individual elements of a plot

[Cottrell, A. <cot...@wf...>]

In some contexts I prefer to set "noenhanced" as an initial terminal
option (to avoid turning underscores in identifiers into subscript
markers), but show certain labels in enhanced mode. The doc for (e.g.)
xlabel says "noenhanced requests that the label text not be processed
by the enhanced text mode parser, even if enhanced text mode is
currently active." That works fine, but I'm looking for the converse,
namely (e.g.)

set xlabel "s = λ/λ_{max}" enhanced

when noenhanced has been set initially, and that doesn't work, or at
least not with gnuplot 6.0 p2. Would it be difficult to support?

Allin Cottrell