[Octave-bug-tracker] [bug #50247] add text properties link/info to help text for text, title, xlabel, and others

[Brett Green]

Follow-up Comment #10, bug #50247 (project octave):

In general, it would also be nice to have more references to lists of relevant
properties so users know where to turn. I've many times found myselve chasing
wild geese trying to find what property of what object to modify.

As an example of something with both well-made references and some room for
possible additions, the plot function reference has several property-value
pairs specific to that function:
https://octave.sourceforge.io/octave/function/plot.html
Are there additional property-value pairs that may be passed through the
function? What are they? In this case, the documentation points to "Line
Properties". It's hyperlinked in the GUI documentation, but not in the online
documentation.

There many plot-related knows that may be tweaked that don't fall under this,
though. For example, recently, someone asked how to change the labels on the
bottom of their plot. This was done by modifying one of the axes properties,
but a user who only read about the plot function would not know about that.
Users are likely going to go straight to the plot function reference without
first reading about figures and axes and their respective properties, so it
would be helpful to add a note stating where additional, related properties
could be found and used to modify particular aspects of a plot.

The example I cited in which a user wanted to change axis labels was actually
for a bar graph, so that's another page that could use such a reference.

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