pso
...\DESCRIPTION
...\help
...\....\aliases.rds
...\....\AnIndex
...\....\paths.rds
...\....\pso.rdb
...\....\pso.rdx
...\html
...\....\00Index.html
...\INDEX
...\MD5
...\Meta
...\....\hsearch.rds
...\....\links.rds
...\....\package.rds
...\....\Rd.rds
...\R
...\.\pso
...\.\pso.rdb
...\.\pso.rdx