Template:Dir
From Veloopti Help
ltr
Outputs "rtl" for right-to-left languages else "ltr".
⧼usage⧽: {{dir|language_code}}
Currently it recognizes the following rtl languages:
- ar · arc · dv · fa · fa-af · glk · ha · he · ks · mzn · prd · ps · sd · ur · yi