Service functions used by the UI packages
Entry point for execution of a UI function. The parameter is a reference to the method.
... is a list of name-value pairs that define initial context identifiers that must be set during initPlugin. This set will be extended to include command_line if the script is detected as being run outside the browser.
Check if the web exists. If it doesn't, will throw an oops exception. $op is the user operation being performed.
Check if the given topic exists, throwing an OopsException if it doesn't. $op is the user operation being performed.
Checks if this web is a mirror web, throwing an OopsException if it is.
Check if the given mode of access by the given user to the given web.topic is permissible, throwing a TWiki::OopsException if not.
Read a topic from the TWiki web, or if that fails from the current web.