Input controls allow the Venapp user to input information into the screen. DATEVAR allows the user to enter a date in order to change the value of a model Constant or Game variable. EDATEVAR is the same as DATEVAR with European day/month ordering. LISTVAR displays a dropdown combo box with a series of values that can be chosen to set a Constant or Game variable. MODRUNNAME allows the user to type in the name of the run to be made. MODTABLE displays an small graph of a Lookup which, when clicked on, allows the user to use the Graph Lookup Editor to modify a Lookup function. MODVAR allows the user to type in a value for a model Constant, String variable or Game variable. RADIO1VAR and RADIOVAR allow the user to click on radio buttons to set model Constants and Game variables to different values. SLIDEVAR displays a slider that allows the user to set the values of Constants and Game variables. SLIDEVARTIE allows a number of SLIDEVARs to be tied together so that all of them add up to or are less than a specified value. SWITCHVAR allows the user to click on a check box to toggle the value of a model Constant or Game variable.