appserv — home to the Application Server and Process Scheduler Server; location of psadmin where you start, stop, and manage those servers
bin — location of all the binary programs such as Application Designer (pside.exe), Data Mover (psdmtx.exe), and so on; also location of SQR (sqrw.exe)
cblbina — location of compiled COBOL programs
class — location of Java packages
crw — location of Crystal Reports that will be run from online
data — location of Data Mover Data files that have been or will be loaded into the database
doc — location of Word documents used with the Process Scheduler
excel — location of Execl documents such as the ExcelToCI utility
maint — data mover scripts and such; typically associated with tax updates or bundles
nvision — NVision reports
PSEMAgent — home of the Enterprise Management Agent, which is the program that crawls the drive and reports installation information to the EMHub and also copies files to and from the home directory with the Hub
PSEMViewer — home of a utility application for working with teh EMHub
scripts — various data mover scripts typically associatedwith tax updates and bundles
sdk — Software Developement Kits for writing external applications that interface with PeopleSoft such as Java and VB kits for accessing Component Interfaces
sendmaster — an application for use with testing Integration Broker messaging
setup — location of various installers such as the PIA installer and the Database installer that builds the PeopleSoft database in your RDBMS system
sqr — location of the SQR reports
src — location of various source code; COBOL source code is the most prominent
tuxedo — home of the tuxedo application used by Application Designer, the Application Server, etc
verity — home of the Verity Search Engine used by PeopleBooks and the Portal Menu search
webserv — home of the PIA, which is the online web application that talks with the Application Server and sends the HTML to the browser for the application
winword — location of Word documents used with Process Scheduler