In case the user wants to examine all windows, the command ``4'' should be used with the option for the automatic analysis of the intermediate table. Inspection of selected windows (no convergence, more than N iterations and so on) is also possible.
Looking at the display, one can see the reasons why the fit has some problems and can take action. With the command ``C'' one can delete one component, with ``I'' (or ``J'') one can add one or more components. With the ``E'' command one can add a hole and with ``G'' one can delete the hole and restore the subframe. Both ``C'' and ``G'' ask for the component (or hole) to delete.
Selecting the contribution of one individual component is not an easy task in crowded windows. The problem can be overcome with the commands ``P'' and ``T''. After ``P'' one must give the sequential position of the star to examine in the window: this flags with ``0'' all the other components disabling their display. The user is therefore left with only one component on the screen.
It must be noted that after the command ``P'', the key ``Q'' always has to be used to restore the window. Otherwise, all the other stars will be maintained with the ``0'' flag, and consequently not considered in following operations (registration, fit and so forth).
The command ``T'' is complimentary to the ``P'' command since it adds the ``0'' flag only to the sequential component selected by the user. ``T'' is also used to restore the component.
If for some reason the window is totally irrecoverable ANALYSE/ROMAFOT offers the possibility to start again with the window. One should delete all the components and holes with ``C'' and ``G'' and then call the window with ``N''. In this way the intermediate table is read in input mode allowing for commands ``S'' and ``R'', not permitted when the table is read with the ``D'' command.
A useful feature is the command ``V'' which enables new tables to be opened, for instance a new frame. This is sometimes used to look at variables on different frames or at objects with extreme colour indexes.
Finally, the command ``@'' allows the substitution of one component in a window. In principle, this operation could be performed with the commands ``C'' and ``I''. However, in that case the new component is appended. With ``@'' the component can be inserted at a given position of the list. The actual fit is completely independent of whichever of the two possibilities one chooses; however, since ROMAFOT attributes names to the stars according to their sequential position, the two operations produce different names. This could be important for subsequent procedures. The same is true if one deletes one component or flags it with the ``T'' command. The result for photometry is identical since the object disappears in both cases but, in case of ``T'', the object survives as far as the name is concerned.
After all the necessary corrections have been carried out, the user can now select the windows to be fitted by running the command SELECT/TABLE. The selection should be put on the windows which should be untouched by a subsequent command FIT/ROMAFOT. This command will then fit only the indicated windows. Of course, to find a satisfactory solution, the loop ANALYSE/ROMAFOT FIT/ROMAFOT can be executed as many times as needed. Finally, one should run the command: