at the bottom of what you'll see there will
be a section called " baseline shift." This is
where
you do it.
You are aware that increasing the baseline shift will
in fact increase the inter-line spacing? Depending on
the amount of text you have to shift by this method,
you'll get huge holes and the text will appear
disturbed, especially when the adjacent page uses
"normal" baseline shift.
Hullo Mathias.
You certainly have a point there, and it is a fact that the baseline adjustment has to be applied judiciously. Setting text in 12 pt Baskerville for an A5 book, I never go beyond about 0.8 pt, and seldom much below 0.3 pt.
Even this is after I have set my line spacing at 0.8. This would a shade too close for this typeface were I to leave it at that throughout. But it gives me room for adjustment, and avoids having to input negative baseline shifts, which escape the double-click short cut to overtype.
In learning how to manage this (but I had to - it's what Pages offers to effect traditional leading) I initially ran in to exactly the type of problem you have indicated: although I've never attempted to deal with huge blocks of text at a time. The point of the exercise is really to line up the bottom of your text on every page; which is absolutely essential if you're setting up facing pages.
And the same for adjacent columns.
The problem you indicate can also occur if the adjustment is not done page by page - which is why I added the wrinkle, for Joe, that it's a good idea to go JUST over each page or column; and then in the next, once the wrap is established, to be sure to pick up the remainder.
So long as these precautions are observed, it is most definitely possible to achieve an evenly balanced text on each page; or from one column to another. Of course the figures I have cited from my own project will differ for different fonts or different sizes. You have always to experiment first, but once you've set your parameters its perfectly easy to follow them.
It is also true that even the best typeface, when evenly leaded to a page or column, will sometimes display what seems to be a rogue spacing. This occurs when you have a line with no or few ascenders amongst neighbouring lines with plenty. This is why I included reference to the character spacing adjustment that is also available in replying to Joe.
Exactly the phenomenon you have noticed could also, in theory, be applied to correct such variations of density; but I suspect that any typesetter would spot it as a fudge. But you actually can, for experiment, try selecting less than a whole page or column - and the pitfall you describe will be shown.
This is why I have emphasized proceeding with one page or column at a time.
If this is neglected the variation of spacing within them will indeed show up, and the very purpose of balancing their depth would be defeated anyway.
But please do be convinced that the baseline adjustment is the provision made in Pages to effect traditional leading. It is actually called that because typesetters, when they worked with lead (or an alloy of it anyway) used to slip in little wedges (of lead because it was handy) between the lines of type in their trays before casting them for printing. Baseline shift does the same.
I hope you don't think me just contrary. But I would not have bought Pages without this feature. And if the development team is to automate it for some future release, it is essential that the programmers heed the sensitivity of type to this adjustment - including that they retain a manual access to it to apply the finishing touches.
Fonts.com, if you're interested, has comprehensive advice on most aspects of typography. But what they emphasize on this is that the end result must always be the subject of a considered aesthetic judgement.
If Joe's a bit bewildered at first, he won't be for long. And if anyone needs to bash it out to meet a deadline, there is always the bottom line option of keeping all spaces completely consistent. Times New Roman was designed for this, and many daily newspapers are mostly put out that way.
But if you're setting up something to last more than a day, you generally need some variation of spacing and to avoid having widows and orphans.
Leading, in the end, is simply to compensate for the effect of this on the depth of your pages and columns. The compensation you make, in effect, must also try to compensate for the variation of density that would result in any case from different numbers of separated paragraphs, or the avoidance of widows and orphans that create the need for leading. The payoff is that you can apply a greater freedom (eg, separated paragraphs) and still achieve a text that is both lively with variation, and balanced in overall appearance.
To try to do this without leading results in uneven depths.
But whilst uneven depth, unless deliberate and for a reason (eg, the page or the column ends) will jar the eye immediately, it can readily overlook small variations in line spacing, so long as these achieve a consistent optical density. Which means you have to steer clear of the problems you explain.
Thanks to you, and Joe, for bringing these issues to light.
iBook G4 Mac OS X (10.4.3)