Typical Installation Parameters > Tokens
  
Tokens
Tokens enable you to dynamically reference parameters from other fields. You can use any parameter name as a token by surrounding the parameter name in @ symbols. The tokens also work recursively.
For example, to resolve QXODB_DIR:
QXODB_DIR = @QXOSERVER_DIR@/db
QXOSERVER_DIR = @GLOBAL_QXTEND_DIR@/qxoserver
GLOBAL_QXTEND_DIR = /qad/qxtend
The result is:
QXODB_DIR = /qad/qxtend/qxoserver/db
Values are stored as tokens in the repository and resolved at runtime during configuration in the UI, or at runtime as ant properties.
Note: During configuration, hovering over a field label displays the corresponding parameter name. If you hover over the field itself, the fully resolved parameter appears as a tool tip.