Groups
======

Group related shapes inside square brackets to draw a labelled container. A
group has a name, a body, and a label after the closing bracket:

.. sheeptext::
   :alt: A labelled region containing one box

   Region: [
       A1: box "service" with .nw at (120, 100)
   ] "Region Alpha" fill #1d4ed8

Groups nest, and each group carries its own label and styling. Names inside a
group can be referenced from outside it — for example to draw a line between
two regions:

.. sheeptext::
   :alt: Two labelled regions connected by a line

   Campus: [
       RegionA: [
           A1: box "a1" with .nw at (120, 100)
       ] "Region Alpha" fill #1d4ed8
       RegionB: [
           B1: box "b1" with .nw at (120, 270)
       ] "Region Beta" fill #7c3aed
   ] "Campus Services" fill #0f172a textsize 16 bold
   L1: line from RegionA.s to RegionB.n

Next: let SheepText place shapes for you with :doc:`layout`.