--- /dev/null
+# languages
+
+The following (private·use) language codes are reserved for languages
+ under development by users of this _Wiki_{as=cite}:8--:
+
+{role=note}
+:::
+The private·use subtags ranging from `qaa`–`qfy` are reserved by
+ Unicode for use with C·L·D·R and should not be used.
+:::
+
+| code | language |
+|------:|:------------|
+| `qho` | Eho |
+| `qjl` | Jastulae |
+| `qjt` | Jastugay |
+| `qjx` | Pre‐Zheshoi |
+| `qlr` | Elrex |
+
+Current recommended best practice is to actually use a primary subtag
+ of `art` (artificial languages) alongside an appropriate script tag,
+ and include the more specific subtag in the private·use area
+ (following `-x-`).
+Applications are unlikely to recognize specific private·use tags, so
+ using them as the primary subtag is of limited utility.