# Subroutines
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# Subroutines
BasicsUtilities
Four user management APIs (create, update, delete, login) all call a single reusable Audit Logger subroutine - demonstrating how to write logic once and use it everywhere.
TriggerHTTP (built-in)EndpointCreate User APITriggerHTTP (built-in)EndpointUpdate User APITriggerHTTP (built-in)EndpointDelete User APITriggerHTTP (built-in)EndpointLogin API![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine definitionAudit Logger![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callLog Create Event![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callLog Update Event![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callLog Delete Event![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callLog Login EventBusiness logic (built-in)TransformAudit LogicPress enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.