1. 2.x tripal_core/api/tripal_core.tripal_variables.api.inc tripal_variables_api
2. 3.x tripal/api/tripal.variables.api.inc tripal_variables_api

Provides an application programming interface (API) for managing variables associated with Tripal managed Drupal nodes. The Tripal Variables API supports storing any type of variable such as a property or setting that should be associated with a Tripal managed Drupal node. Variables are meant to store non-biological information only. All biological data should be housed in the Chado tables. Be aware that any data stored as a Tripal Variable will not be made visible through services such as Tripal Web Services and therefore can be a good place to hide application specific settings

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tripal_core/api/tripal_core.tripal_variables.api.inc, line 8

Provides an application programming interface (API) for managing variables associated with Tripal managed Drupal nodes/