The default size of the view displays is based on the size of the currently selected display font. In specifying display size, the following standard units of typographic measure are used:

Unit	Meaning
p	one printer's point = 1/72 inch
S	user-selected font size in points; default font is 12-point courier
V	vertical height of text line, including vertical spacing = 1.2 x S
em	width of a representative "m" character = 6 x S

Based on these units, Table 5 defines the default size for each of the view- level display windows.

View Level	Dimensions
item	60em wide by 34V high
day	time column is W+4em wide, where W is the width in characters of widest displayed time; title column is 64em wide; total height is TIem x Rem, where TI is the current setting of the time increment option and R is the total number of displayed rows based on the current settings of the normal time range and show/hide 24 hours options
week	each day column is 10em wide; total width is N columns, where N is the number of days based on the current setting of the normal day range option; total height is 24V
month	each day cell is 10em square; total width is 7 cells; total height in cells is based on the number of days in a month
year	72em wide; total height is 14V + W1V + W1V + W1V + W1V, where each Wi is number of weeks in the month with the most weeks for each of the four quarters of the year.

In all displays, border lines are 1p and the spelled-out date banner at the top is 1V high.

The user may change the default font family and size in the preference setting dialog.

In general, all views scale evenly when the display window is resized, but font size does not change. There is no maximum window size, other than that dictated by the physical limits of a particular display screen. The minimum window size is generally based on the size of the currently selected text font. Specific details of resizing windows follow.

Display features for the day view:

• The time increment setting does not affect the allowable start and end times for scheduling any item, it only affects the appearance of the display.
• Horizontal lines on the hour are shown in black across the full width of the day display; lines at increments smaller than an hour are shown in light grey across the width of the title column, but not the time label column. See Figure ??.
• When dashed lines are hidden and the increment is smaller than one hour, item titles are positioned vertically so that their tops start at the same height as the increment label nearest to but not after the start time of the item.
• Dashed lines and down-arrows go off when vertical height is too small -- define "too small" here.
• Resizing behaves as follows:
  • No row in the display will ever shrink smaller than the current setting of the increment size.
  • Hence, if a day display window is shrunk such that there is not enough room to show all rows of a all days, the display will start clipping rows from the bottom of the display, adding a scrollbar on the right of the full display.
  • If a day display window is grown such that there is more than enough room to show all rows of all days, then each row is increased equally in size, and the scrollbar is removed
  • When a particular hour has more scheduled items than the current setting of the increment height, and there is not enough vertical height in that hour row per the preceding resizing rules, then a mini vertical scrollbar is added to that hour of the display. Mini scrollbars are only shown when the user clicks within an affected hour. Also, mini scrollbars are only shown for an hour display or greater, not for increments smaller than an hour. The mini scrollbars work, independently from the larger vertical scrollbar for the full day display.
• The font size is not automatically shrunk when window is shrunk.

The precise default format of an item listing is as follows:

1. The item begins with the starting and ending times, separated by a dash.
2. If the starting and ending times are both in the AM or PM, then the numeric time values are separated by a dash with no surrounding spaces, and the pair is followed by one space and then "AM" or "PM" designation.
3. If the starting time is in the

The example to address here is when in the context of Figure 16 the users adds appointments at the following times: 3-4PM, 2:45-3:15PM, 3:15-3:45PM.

Here's the rule that I think works, which may be easier to explain if we think some more about it. For any day, create sets of items with any overlap whatsoever. Sort those items by the normal criteria, vis a vis earliest start time, shortest duration, alphabetically earliest title. Within this list, move all items over as far as possible to the left, as long as the no two items in the same column overlap and the sorting criteria continue to be met. It appears what we're doing is maximally filling each column, i.e., not leaving any space blank in a column if a none overlapping item will fit there. If tow or more items will fit in a give space, then the one chosen is the one earliest in the sorting order, with the unchosen one relegated somewhere to the right, in the (recursively) correct position. "Recursively correct" means in the leftmost column where it will fit such that all criteria are met.