navigation

To move through a document to get to the content you want, you do such things as scrolling, following hyperlinks, and using bookmarks. iSilo™ provides many ways to navigate through a document:

scrolling

Scrolling involves a sequential movement either up or down through the content of a page. For example, if you read a novel, you may scroll down line by line as you read or you may read a full screen of text then move on to the next screen of text.

iSilo™ initializes the following keys for scrolling, which you can modify through the button options settings:

screen up
By default, when you scroll up a screen, if the current first line is partially displayed, it becomes fully displayed as the last line after the scroll. Otherwise, the line above it becomes the last line after the scroll. This behavior is called full with text align. You can modify the scroll options settings to change the screen up behavior.

screen down
By default, when you scroll down a screen, if the current last line is partially displayed, it becomes fully displayed as the first line after the scroll. Otherwise, the line below it becomes the first line after the scroll. This behavior is called full with text align. You can modify the scroll options settings to change the screen down behavior.

line up
If the current first line is partially displayed, then it scrolls in to become fully displayed. If the current first line is already fully displayed, then the line above it scrolls in to become fully displayed.

The distance scrolled is in all cases limited to a tenth of the height of the view area. This means that if you have a tall image that you are scrolling in from the top, each time you scroll up by a line, only an amount equal to one tenth of the view height scrolls in each time.

line down
If the current last line is partially displayed, then it scrolls in to become fully displayed. If the current last line is already fully displayed, then the line below it scrolls in to become fully displayed.

The distance scrolled is in all cases limited to a tenth of the height of the view area. This means that if you have a tall image that you are scrolling in from the bottom, each time you scroll down by a line, only an amount equal to one tenth of the view height scrolls in each time.

screen left
Scrolling left a screen scrolls left a distance equal to about 95% of the view area width.

screen right
Scrolling right a screen scrolls right a distance equal to about 95% of the view area width.

line left
Scrolling left a line scrolls left a distance equal to about 5% of the view area width.

line right
Scrolling right a line scrolls right a distance equal to about 5% of the view area width.


links

Links, also known as hyperlinks, are words or images in the content of the document that you can follow to jump to the target of the link. The item you follow is also known as the link's source. In a well-designed document, the author will have interspersed relevant links throughout the content of the document so that the person viewing the document can easily jump to other relevant or interesting parts of the document.

One common use of links is in a table of contents, whereby it is handy for each item in the table of contents to be a link to its content so that you can simply follow an item to jump to the content. This is much easier than having to search for the page or location where the content starts.

Usually, a textual link has a visual indication such as a dotted underline to indicate that it is a link. But it is possible for a link to not have any such indication if the author styled it as such.

following a link

To jump to the target of a link, you first need to enter hyperlink mode so that you can select the link you want to follow. iSilo™ initializes the following keys for entering hyperlink mode, which you can modify through the
button options settings:

With the above assignments and assuming the current screen has one or more links, when you press Right on the 4-way navigation key, the first link on the page highlights. If you had pressed Left first, the last link on the page would have become highlighted. In both cases, you enter hyperlink mode.

In hyperlink mode you can iterate across the links currently visible on the screen. Use either Right or Down on the 4-way navigation key to move the highlight to the next link. Use either Left or Up to move the highlight to the previous link. To follow the currently highlighted link, press the Action button. When you follow a link, you also exit hyperlink mode.

While in hyperlink mode, if you decide you do not want to follow any of the links currently visible, press the Back key to exit hyperlink mode. Or if you have assigned the Hyperlink action to a button using the button options, you can also press that button to exit hyperlink mode.

returning from a link

Whenever you follow a link, iSilo™ adds the location of the link's source to the jump history. So after you follow a link and are done reading the content at the link's target, you can immediately return to the location from where you followed the link and continue reading from where you left off there. By default, you use the Back key to jump back.

jump history

iSilo™ keeps track of jumps you have made using any of the following methods:
For each such jump, iSilo™ remembers the point from where you made the jump. It can remember up to 16 jumps within a given document and up to eight jumps to external documents.

This allows you to easily jump back to recent jump points. If you have jumped anywhere, then in the Marks sub-menu of the Menu menu, the Back command becomes enabled. This indicates that you can jump back to the last location from where you made the jump.

In addition to being able to jump back, you can also jump forward back to the location from where you made a return jump. You jump forward by using the Forward menu command in the Marks sub-menu of the Menu menu.

You can clear the jump history by selecting Clear History from the Marks sub-menu of the Menu menu. iSilo™ saves the jump history across document closes and opens. Note that this saved information does not include the history of jumps to external documents.


bookmarks

A bookmark marks a location in a document and has an associated name. You can mark various locations within a document with bookmarks and easily jump to any of those locations at any time simply by selecting the desired bookmark from a list. Some documents may also already have predefined bookmarks.

adding a bookmark

Use the
Add Bookmark command on the Marks sub-menu of the Menu menu to activate the Add Bookmark dialog to set a bookmark at the current location. See bookmark types for a description of the types of bookmarks you can add to a document.

going to a bookmark

If the document has one or more bookmarks defined, you can use the Bookmarks command on the Marks sub-menu of the Menu menu to display a list of bookmarks in the current document. Select a bookmark to go to the location that it marks.

By default, iSilo™ assigns the Bookmark command to the Action button so you can easily use that button to access the bookmarks of a document.

editing bookmarks

You can rename, delete, and re-order the bookmarks in a document by using the Edit Bookmarks command on the Marks sub-menu of the Menu menu.

bookmark types

Bookmarks come in three types as described here:

Note: For documents in the Doc format, only local and document bookmarks are supported. Documents in iSilo™ format support all three bookmark types. All other document types only support local bookmarks.


marks

While
bookmarks provide a method for associating a name with a location in a document, marks provide additional methods for going to specific locations in a document.

unnamed mark

While viewing a document, you can easily mark the current location with the unnamed mark and return to the marked location at any time later. The unnamed mark does not require you to enter a name for it, so it is a quick way to mark the current location. One situation in which you might want to use it is if you want to remember your current location before scrolling through the document to scan for some other information. You can mark the current location with the unnamed mark, scan for the information, and then return to the unnamed mark. You can set one unnamed mark per document.

mark location

To mark the current location with the unnamed mark, choose
Mark Location from the Marks sub-menu of the Menu menu.

jump to mark

At any time later after setting an unnamed mark, you can return to the marked location by choosing Jump to Mark from the Marks sub-menu of the Menu menu.

page marks

You can jump to the top or bottom of the current page or to any page of the document.

top of the page

Use
Top of Page on the Go To sub-menu of the Menu menu to jump to the top of the current page.

bottom of the page

Use End of Page on the Go To sub-menu of the Menu menu to jump to the bottom of the current page.

previous page

If the document has more than one page and you are not currently on page one, use the Previous Page command on the Go To sub-menu of the Menu menu to go to the top of the previous page.

next page

If the document has more than one page and you are not currently on the last page, use the Next Page command on the Go To sub-menu of the Menu menu to go to the top of the next page.

first page

To jump to the top of the first page of the document, use the First Page command on the Go To sub-menu of the Menu menu.

last page

To jump to the top of the last page of the document, use the Last Page command on the Go To sub-menu of the Menu menu.

any page

To jump to the top of any page of the document, use the Page Number command on the Go To sub-menu of the Menu menu. In the Go To Page dialog, enter the page number in the field, and then select Go To.
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