Mention secondary_draw_order on the render_layer documenation

[MrSmoothieHuman]

Wanted to ask about having an extra line or so added to the data stage render_layer page, which mentions/links to the secondary_draw_order page? I just personally had to deal with overlapping render_layers and the only fix for it was to use secondary_draw_order - which took a second to find due to it not being directly mentioned in relation to render layers

07-07-2025, 00-31-57.png (385.16 KiB) Viewed 101 times

(my original issue, the module visualisations were overlapping the medium power pole graphics due it using the 'object' layer; while my graphics were ones above it, like higher-object-above/under)

07-07-2025, 00-33-11.png (659.58 KiB) Viewed 101 times

(the fixed version, which was only doable with secondary_render_order)

If it helps, me and a few others were thinking to word it like:
"Specific objects, like pipe pictures or beacon modules, can have a secondary_draw_order which is used to avoid issues with overlapping graphics."