544: Highlights

If you want to create a new Time instance, then instantiate one of the following patterns:
```
Time now 
Time fromSeconds: seconds past midnight 
```
If you want to extract hours, minutes, or seconds from a Time instance, then instantiate one of the following patterns:
```
Time instance hours 
Time instance minutes 
Time instance seconds 
```

If you want to add or subtract Time instances, then instantiate one of the following patterns:

Time instance addTime: another Time instance 
Time instance subtractTime: another Time instance

If you want to compare Time instances, then instantiate one of the following patterns:
```
Time instance = another Time instance 
Time instance < another Time instance 
```

If you want to create a new Date instance, then instantiate one of the following patterns:

Date today 
Date newDay:      day in year (an integer) 
     year:        year (an integer)

If you want to extract integer information from a Date instance, then instantiate one of the following patterns:
```
Date instance day 
Date instance year 
```
If you want to extract information from a Date instance, then instantiate one of the following patterns:
```
Date instance dayName 
Date instance monthName 
```
If you want to add or subtract a specified number of days from a Date instance, then instantiate one of the following patterns:
```
Date instance addDays: Integer instance 
Date instance subtractDays: Integer instance 
```
If you want to compare Date instances, then instantiate one of the following patterns:
```
Date instance = another Date instance 
Date instance < another Date instance 
```