6 uses of STREAM_WRAPPERS_WRITE_VISIBLE

file_field_settings_form in modules/file/file.field.inc
Implements hook_field_settings_form().
file_get_stream_wrappers in includes/file.inc
Provides Drupal stream wrapper registry.
image_field_settings_form in modules/image/image.field.inc
Implements hook_field_settings_form().
image_style_flush in modules/image/image.module
Flushes cached media for a style.
stream_wrappers.inc in includes/stream_wrappers.inc
Drupal stream wrapper interface.
system_file_system_settings in modules/system/system.admin.inc
Form builder; Configure the site file handling.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.