The agent previously encountered issues with internal navigation links on the Dictionary of Scottish Architects website. Now, determine if the main menu is functional and, if so, explore its options to find a way to search for or browse architects and firms, or access any 'About' or 'Help' sections that might explain the website's structure or known issues.
Navigate to 'https://portal.historicenvironment.scot/'. Locate and click the 'Main Menu' button (if available and functional). If the main menu opens, identify and list all available top-level menu items. Specifically look for options like 'Search', 'Architects', 'Firms', 'Buildings', 'About', or 'Help'. If a search function or an alphabetical index for architects/firms is found, describe how a user would typically interact with it. If the main menu remains unresponsive, state that it is not functional.
The agent successfully navigates to the homepage. The agent attempts to click the 'Main Menu' button. If the main menu opens, list the exact text of all visible top-level menu items. If a search function or browseable index is found, describe its general functionality (e.g., 'a search bar is present' or 'an alphabetical list of architects is available'). If the main menu does not open, clearly state that the 'Main Menu' button is not functional.