Current for 6.x-2.0-alpha2 This file contains the main API functions for OpenLayers and its sub-modules. Please refer to the project page for more up to date information and documentation: * http://drupal.org/project/openlayers # Advanced Help Browsable documentation is available through the [Advanced Help module.](http://drupal.org/project/advanced_help) # Map Build Process The parts to build a map - layers, behaviors, maps, and styles - are loaded with menu loaders, like `openlayers_layer_export_load`. They should not be loaded manually because menu loaders do the necessary instantiation and cache-clearing. In 2.x, layers, behaviors, and styles contain more logic for 'rendering themselves' than before, but cannot completely exist on their own. The functions that iterate over included layers, behaviors, and styles are in `openlayers.render.inc`. `openlayers_build_map` and `openlayers_render_map` are the two essential parts of the actual map building and rendering, and are included in `openlayers.module`. The map building process does not directly deal with map data: in the case that Drupal is rendering data (as in openlayers_views), this functionality is encapsulated in the `render()` method of the layer type. See `modules/openlayers_views` for an example of how this works.