$PROFILES$.AFLOG_ENABLED
Specifies if logging is enabled or not. The default value is NULL (False).
$PROFILES$.AFLOG_FILENAME
Specifies the file where middle-tier log messages are written.
$PROFILES$.AFLOG_LEVEL
Specifies the logging level. The default value is NULL (Log.UNEXPECTED).
$PROFILES$.AFLOG_MODULE
Specifies which modules are logged. The default value is NULL (%).
Refer:http://docs.oracle.com/cd/E18727_01/doc.121/e12897/T302934T359300.htm
$PROFILES$.APPLWRK
= Profile: FND: Override Directory
The FND:Override Directory profile option is used by the Work Directory feature. The value of FND: Override Directory should be the directory containing your alternate files. Typically, this profile option should be set at the User level only.
$PROFILES$.APPS_MAINTENANCE_MODE
= Profile:Applications Maintenance Mode
$PROFILES$.APPS_SSO_LOCAL_LOGIN
=Profile:Applications SSO Login Types
$PROFILES$.CURRENT_ORG_CONTEXT
used to fnd_client_info.set_org_context(&org_id)
$PROFILES$.DB_SESSION_ID
Database Session ID
$PROFILES$.DEFAULT_ORG_ID
=Profile:MO: Default Operating Unit
$PROFILES$.FND_COLOR_SCHEME
refer:Profile:Java Color Scheme to set Forms Color
$PROFILES$.ICX_SESSION_ID
=Fnd_Profile.value('ICX_SESSION_ID')
$PROFILES$.MFG_CHART_OF_ACCOUNTS_ID
Chart of Account ID
$PROFILES$.MFG_ORGANIZATION_ID
=Fnd_Profile.value('MFG_ORGANIZATION_ID')
$PROFILES$.ORG_ID
=Fnd_Profile.value('ORG_ID')
$PROFILES$.user_id, resp_id and resp_appl_id
=User ID, Responsibility ID, Application ID