This box permits the user to browse through the displayed document by writing the number of the page sought in it. The number chosen must be included in the total number of pages indicated beside the box.
« prev. | next »	These two commands permit the user to move to the page respectively preceding, or following, the page displayed at the time.
	These two icon commands permit the user respectively to open or close the pop-up browser that reveals the thumbnails of all the pages of the document displayed at the time and that allows to go directly, by selecting one of the thumbnails, to any of these pages.
	Selecting this icon command (shown here in the active and non-active states respectively) permits the user to go to the ‘image only’ display mode. The icon command can be selected only if it is active.
	Selecting this icon command (shown here in the active and non-active states respectively) permits the user to go to the ‘text only’ display mode. The icon command can be selected only if it is active.
	Selecting this icon command permits the user to open in a new window, and/or download, the complete photo-reproduction of the document displayed at the time, contained in a PDF file.
	Selecting this icon command (shown here in the active and non-active states respectively) permits the user to go to the ‘text/image’ mode of display. The icon command can be selected only if it is active.
	These icon commands permit respectively to increase and reduce the magnification level of the photo-reproduction of the page (within the display window) visualised at the time.
	This icon command causes, when selected, the photo-reproduction visualised at the time to fit to the display window.
	This icon is a visual navigator showing which area of the photo-reproduction of the page consulted is visualised at the time. Specifically, the yellow area indicates the area of the photo visualised within the display window. If one runs the cursor over this icon, or over the photo of the document, the cursor takes the form of a stylised hand. Both the photo of the document and the yellow area within the icon can be selected and, holding down the selection button, dragged and moved, thus permitting the visualisation of areas of the page of the document that are different from the one visualised at the time.
	This icon command indicates that in that point the text contains a note. When selected, it activates or deactivates the display of the text of the note.
	This icon command indicates that a critical phenomenon is present, or begins, in that point of the text. When selected it activates or deactivates the display of the phenomenon.
Light blue	Light blue is used to highlight parts of a text that are recognised as names of people, places, institutions, currents of thought or university chairs. Highlighting can be activated or deactivated by selecting the item ‘Names’ in the list above the text.
Green	Green is used to highlight parts of the text that are recognised as titles of works or titles of parts of works. Highlighting can be activated or deactived by selecting the item ‘Titles’ in the list above the text.
Pink	Pink is used to highlight parts of the text that are in a language different from the principal one of the document. Highlighting is activated or deactivated by selecting the item ‘Language’ in the list above the the text.
Yellow	Yellow is used to highlight parts of the text affected by a critical phenomenon. Highlighting is activated or deactivated by selecting the corresponding icon or the item ‘Critical phenomena’ in the list above the text.
Dark yellow	Dark yellow is used to highlight words that have been individuated through a search.

Table of critical textual phenomena

 
Notes

1. Definition of ‘interventions carried out by main hand’: in the case of manuscripts, interventions carried out by the writer of the text; in the case of printed texts, handwritten interventions by the same person who carried out the majority of the interventions throughout the text.
2. Definition of ‘interventions carried out by another hand’: handwritten interventions by a hand other than the main one.
3. Definition of ‘doubtful terms’: the terms that are difficult to interpret, not found in thesauri or indexes, or meaningless in the context.