In The Unicode Standard, Lisu script implementation is discussed in Chapter 18 East Asia.
The Old Lisu script was encoded in The Unicode Standard version 5.2 under the name Lisu. The script is encoded in the following block:
|Blocks||Character Range||Added in Unicode Version||Unicode Chart|
A number of proposals for its inclusion were submitted to the Unicode Technical Committee and WG2:
2007-12-29 Documentation on legacy encodings of the Old Lisu script — China N.B. ( L2/07-423)
2008-01-28 Proposal for encoding the Old Lisu script in the BMP of the UCS — China N.B. ( L2/08-019)
2009-07-10 Discussion and proposal of default Lisu sort order — Martin Hosken ( L2/09-247)