All pages rendered on the system use special tag commands to insert different elements on to the page.
For example, if you want to put the page title onto a template then you can insert the tag {PAGE_TITLE}. This will be replaced with the current page title whatever page is being displayed.
If you want to add a link to a another page on the system then you can add {LINK(1013, Contact)}. This will create a link to the page number 1013 and add the text "Contact" (Contact).

All of the tags need to be enclosed in { } when used on the page and the tag needs to be entered in upper case. They may also have parameters. These are enclosed in ( ). Most of the time it is easier to enter the parameters by position separated by commas. So in the LINK example above, the first parameter is the Object ID of the page you want to link to and the second parameter is the text you want to be displayed on the page. Sometimes there may be a larger number of parameter options and using lots of commas to get to the correct parameter can be awkward and confusing to read. In this case, you can use a JSON list of parameters. So for the example above, you can use {LINK(1013, {"text":"Contact","class":"btn btn-primary"})}. The JSON list of parameters can only be used as the last parameter. A list of all parameters is detailed in the tag help.

When adding an Object ID as a parameter, it is a good idea to precede it with "#:". This helps the system to identify the number as an Object ID. This is essential if you are writing an application to be shared by other organisations as the Object IDs will need to be changed by the system when they import your application. So the example above, should be written {LINK(#:1013, Contact)}.

If a parameter includes a comma it must be quoted {LINK(1013, "Contact John Doe or, a member of the team")}. If the parameter includes quotes and commas, quotes are escaped with another quote {LINK(1013, "Contact John ""The Man"" Doe or, a member of the team")}. 

Parameter values are individually interpreted before they are passed to the command for processing. This can be prevented by preceeding the parameter value with two exclamation marks!!

See below for a full list of tag commands and their explanations.

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Tag Description Structure
ACCORDION Add Bootstrap Accordion to the Page {ACCORDION(query, sub_temp_query)}
AJAX_EMBED Embed the contents on to the page using AJAX {AJAX_EMBED(obj_id, param)}
BASIC_DISP Return the Basic Display format specified in the objects list setup. {BASIC_DISP}
BLINK Add a button to the page to Link to another page. {BLINK(obj_id, text, param)}
CALENDAR Displays a Calendar or Diary of events {CALENDAR(obj_id, date_mode, query, relobj)}
CODE_LOOKUP Provide an input box and search button to lookup an object based on its ID or Code {CODE_LOOKUP(list_id, part)}
COMMENT This will create an area for users to enter comments. {COMMENT(obj_id, options, login-text)}
EMBED Embed an object in the page {EMBED(obj_id, sub_temp, minutes, mode)}
FAVICON Specify the url of the favicon to be used on the site {FAVICON(url)}
GLINK Glossary Link {GLINK(obj_id, text, sub_temp)}
GLINK_OFF Turn Glossary Links Off {GLINK_OFF}
GLINK_ON Turn Glossary Links back on again {GLINK_ON}
LABEL Specify a Form Label {LABEL(desc, id)}
LINK Create a link to another Object {LINK(obj_id, text, param)}
LIST List Processing {LIST(root, rel_id, list_id, query, temp_id, disp_opt, page_size)}
LIST_NAV List Navigation {LIST_NAV}
LOGIN Provide a Login Prompt with associated menu options once logged in {LOGIN(options)}
LOGIN_FACEBOOK Allow users to login with their Facebook account {LOGIN_FACEBOOK(auto_login, text)}
LOGIN_FORM Start a Login Form {LOGIN_FORM(error_div_id, class, style)}
LOGIN_LINK Add a Login prompt to the page {LOGIN_LINK(text, form_object_id)}
LOGIN_NAME Display the Login Name Input Box on a Login Form {LOGIN_NAME(tooltip, placeholder, class, style)}
LOGIN_PASSWORD Display The password Input Box on a Login Form {LOGIN_PASSWORD(tooltip, placeholder)}
LOGIN_REM_ME Remember me checkbox on a Login Form {LOGIN_REM_ME}
LOGIN_SUBMIT Submit Button for Login Form {LOGIN_SUBMIT(text, tooltip, class, style)}
MENU Add a menu to the page {MENU(root_id, options, collapse_text)}
NOTIFY Display a pop-up message for the user {NOTIFY(message, type_id, position, duration, min_user_level)}
PAGE_TITLE Display the page title {PAGE_TITLE}
PANEL Add a fixed Panel to the page {PANEL(heading)}
PANEL_CLOSED Add a closed Panel to the page. {PANEL_CLOSED(heading)}
PANEL_OPEN Add an open panel to the page. {PANEL_OPEN(heading)}
PILLS Add Bootstrap Pill Selector {PILLS(query, sub_temp_query)}
PRINT_BUTTON Displays a button that prints the current page {PRINT_BUTTON}
REGISTER Registration Link {REGISTER(text, class)}
RENDER_TREE Render a tree structure of Objects {RENDER_TREE(obj_id, rel_id, sub_temp, options)}
SEQN An automatically incrementing Sequence Number {SEQN}
SET_PAGE_TITLE Set the page Title to overide the default {SET_PAGE_TITLE(title)}
SIDEBAR_LEFT/RIGHT Set the object to be displayed in the left or right sidebar. {SIDEBAR_LEFT(obj_id)}
SLIDES Add Bootstrap Slides to the Page. {SLIDES(query, sub_temp_query)}
SYMBOL Returns a symbol of the specified ID {SYMBOL(symb_id)}
TABS Add Bootstrap Tabs {TABS(query, sub_temp_query)}
WRAP Wrap the specified part of the page with a sub template {WRAP(obj_id)}
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Tag Description Structure
ACCORDION Add Bootstrap Accordion to the Page ACCORDION(query, sub_temp_query)
ADD Add a numeric value to a variable ADD(name, value)
AGE Determine the age between two dates AGE(format, date, date_format)
AJAX_EMBED Embed the contents on to the page using AJAX AJAX_EMBED(obj_id, param)
ALPHA_INC Increase the value of an Alpha Numeric string ALPHA_INC(val)
API_CALL Make a call to a prepared API service API_CALL(api_alias, result_alias, path, method, params)
API_CLEAR_RESULT Clears an API result from memory API_CLEAR_RESULT(result_alias)
API_DATA Returns a data field from an API response API_DATA(result_alias, data_field)
API_DATA_TO_XML Converts one or more API resource fields to an XML string API_DATA_TO_XML(result_alias, data_fields)
API_FOR_EACH Itterates over items in an API result API_FOR_EACH(result_alias, data_field, row_alias)
API_HEADER_SET Adds an HTTP header to send with an API call API_HEADER_SET(alias, name, value)
API_HEADER_UNSET Unsets a previously set HTTP header, or all, for the API call. API_HEADER_UNSET(alias, name)
API_QTY Returns the number of elements in an API result API_QTY(result_alias, data_field)
API_SETUP Prepares for use of an API service API_SETUP(api_alias, url, params, method, response)
APP Append a string to the end of a variable. APP(name, value, separator)
ARRAY_CLEAR Clear the contents of an array ARRAY_CLEAR(name)
ARRAY_FOR_EACH Loop through all elements in an array ARRAY_FOR_EACH(name, var)
ARRAY_SIZE Return the size of an array ARRAY_SIZE(name)
AT Find the position of a string within another string AT(needle, haystack)
BASIC_DISP Return the Basic Display format specified in the objects list setup. BASIC_DISP
BETWEEN Return TRUE if the first value is between the second two values. BETWEEN(check, from, to)
BLINK Add a button to the page to Link to another page. BLINK(obj_id, text, param)
CALENDAR Displays a Calendar or Diary of events CALENDAR(obj_id, date_mode, query, relobj)
CALL Call a predefined Function CALL(name)
CHAR Return a series of characters specified by their ascii value CHAR(...)
CHAT_SEND Send a Chat Message to another User CHAT_SEND(user_id, text, level)
CHAT_USERS Displays a list of Users for use in the Chat System. CHAT_USERS(user_qty)
CHOICE Display a checkbox that allows you to choose if other text is displayed. CHOICE(obj_id, tag, class, target)
CHOICES Displays a drop-down box on the page to allow for the selection of text to be inserted. CHOICES(rel_id)
CODE_LOOKUP Provide an input box and search button to lookup an object based on its ID or Code CODE_LOOKUP(list_id, part)
COID Return the current Object ID COID
COMMA Returns a comma , COMMA
COMMENT This will create an area for users to enter comments. COMMENT(obj_id, options, login-text)
COMPONENT Add one or more components to the current page. Use a list of IDs COMPONENT(...)
COOKIE_DEL Delete a cookie COOKIE_DEL(name)
COOKIE_GET Get the value of a cookie COOKIE_GET(name, default)
COOKIE_SET Set a cookie COOKIE_SET(name, life, value)
CRLF Returns Carriage return & Line Feed characters CRLF
CSV_DATA Get date from imported CSV CSV_DATA(alias, column)
CSV_DATA_TO_XML Convert the imported CSV data to XML CSV_DATA_TO_XML(alias, data_fields)
CSV_FOR_EACH Loop through all CsV data rows CSV_FOR_EACH(alias)
CSV_GET Get the contents of a CSV file. CSV_GET(alias, url)
DEV_MODE Return TRUE or FALSE for the current Development Mode DEV_MODE
DNAM Return the Domain Name DNAM
DNUM Return the current Domain Number DNUM
DOID Return the Domain Object ID DOID
DOMAIN Returns the domain URL DOMAIN
DQUOTE Returns a double quote " DQUOTE
EDITABLE Create an editable area on the page EDITABLE(name)
EMAIL_BUTTON Add an email button to the page EMAIL_BUTTON(obj_id, sub_temp, recipient, text, class, title, from)