Re: Determining what parameters exist for an item

[Carl Sorensen]

Charles O. Lawrence wrote:


> Gentlemen,
 
> How can I determine what parameters exist for an item?  For example,
>what are all the parameters for a
>  TextSpanner?  If my terminology is not correct, please correct me.
 


Charles,

Here is the way I do it, without programming.  You may find this less
confusing.

1) Look up the object in the Internals Reference, Section 3.1 All layout
objects.  For TextSpanner, you can use this link for version 2.18:

http://www.lilypond.org/doc/v2.18/Documentation/internals/textspanner


2)  The standard settings on this page tell you the default settings for
this object.  These are the most commonly used, but they are not all.

3) At the bottom of the page, the interfaces the object supports are
listed.  In the case of the TextSpanner,
these are font-interface, grog-interface, line-interface,
line-spanner-interface, side-position-interface, and spanner-interface.
Each of these interfaces has a list of properties found in the Internals
Reference section 3.2.  And the property lists are linked from the
TextSpanner page.

4) Going to one of these interfaces, e.g. the font-interface found in the
Internals Reference, section 3.2.36,

http://www.lilypond.org/doc/v2.18/Documentation/internals/font_002dinterfac
e


provides a list of user-settable properties for that interface, which will
affect any output item having that interface.

All of this is explained in section 5.2 of the Notation Reference.
Please read it for more information.

HTH,

Carl Sorensen