DBA Sybase case studies

Platform: HP-UNIX 11, Tru64 , Windows
Sybase ASE version: 12.5.x
Background story: I do not know why, but I really have a problem remembering create and drop index syntax. So I'll put it here where I can easily find it.
Task: Write a syntax reletated to index
Solution: There is simple create index syntax:

create index index_name on table_name (column_name1, column_name2)

and there is drop index syntax:

drop index table_name.index_name
Remark: Full create and drop index syntax are given below. For more information about index (and other Sybase) commands, look at Reference Manual Volume 2:Commands.

create [unique] [clustered | nonclustered]
index index_name
on [[database.]owner.]table_name
(column_name [asc | desc]
[, column_name [asc | desc]]...)
[with { fillfactor = pct,
max_rows_per_page = num_rows,
reservepagegap = num_pages,
consumers = x, ignore_dup_key, sorted_data,
[ignore_dup_row | allow_dup_row],
statistics using num_steps values } ]
[on segment_name]

drop index table_name.index_name [, table_name.index_name] ...