Link tags / codes
You may also manually add links within your text paragraphs, using the following codes (remove spaces to make them work):
link to a page within the current wiki: [ [ link text:page_id ] ]
link to another project: [ [ link text:/wiki/-/project_id ] ]
e-mail address (will open your e-mail client) [ [ firstname.lastname@example.org ] ] or [ [ Your name:email@example.com ] ]
link to any other website / ULR: [ [ www.example.com] ] or [ [ link text:www.example.com ] ]
Please note that it will be easy to find the page_id or project_id once you're in editing mode.