Mention templates.

LANGUAGE.md

@@ -278,7 +278,7 @@ Numbers are only equal to other numbers that have identical decimal values and e
 > TRANSLATION → textopen text textclose LANGUAGE  
 > LANGUAGE → language name
 
-Text values, unlike in other programming languages, are not a single sequence of Unicode code points. Rather, they are unique in two ways:
+Text values, unlike in other programming languages, are not a single sequence of Unicode code points. Rather, they are unique in a few ways:
 
 -   They are interpreted as a sequence of graphemes, using a grapheme segmentation algorithm. That means that emojis comprised of multiple Unicode code points are treated as a single symbol when indexing text.
 -   They can be language tagged, indicating what language and optional region they are written in
@@ -304,6 +304,15 @@ It's possible to check whether an environment has a particular locale selected w
 
 This will return `⊤` if the locale is in the preferred list, and, `⊥` otherwise.
 
+Text can also be templates, with aribtrary expressions that are automatically converted to text:
+
+```
+'hi number \8 + 8\'
+'what will you be? \choose(name)\'en
+```
+
+These are similar to string templates in other languages, just with a slightly simpler syntax.
+
 #### _evaluation_
 
 Text literals first get the environment's list of preferred locales and then select the first translation in the list of translations that match the exact language and region, and if there isn't one, then the first translation that matches the language, and if there isn't one, then the first translation.