Non Alphanumeric means that it doesn't consist of letters or numbers.
yes
Character spacing determines the vertical space of any character in the document.
why is itnecessay to represent a blank space as a separate character in text
The enclosed area of a character is called a bowl. Once a bowl is created, the space is then called a counter. A counter is also defined as a partially enclosed space or area of a character.
the lightened point on a display screen where the next character or space can be entered is called a ?
1 bytes
' ' would be the character for a space in Java.
you a little bit of space for your avatar character
The space character in ASCII is CHR(32), so in HEX, that would be 0x20
Space Ghost is a super-hero character that was created by Alex Toth in the 1960s for Hanna-Barbera, the famous cartoon company. While the character was originally conceived as a standard superhero, he is more famous today for his return in the 1990s as a comedy character, particularly on the show 'Space Ghost: Coast to Coast', which was a parody talk show that included appearances from other Space Ghost characters such as Brak and Zorak.
The space bar disappears when a space would be an illegal character. Probably in Safari you were typing in the URL box (perhaps you didn't realize that is where you cursor was) and a space is not a valid URL character. If you had been in the Safari search box it would be a legal character. So be aware of where you cursor is the next time this happens and I'm sure the ipad is trying to protect you from typing an illegal URL.