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2.6.2 Numeric Literals - Integral Values
A decimal integral numeric literal consists of decimal digits optionally with a leading plus or minus sign to
indicate a positive or negative literal value.
Integral literals may be specified in hexadecimal (base 16) by beginning the literal with an ampersand and
the letter H (upper or lower case) followed by one or more hexadecimal digits (0-9, A-F, a-f).  In BasicX
compatibility mode, a trailing ampersand is either allowed, required or disallowed depending on the
specific value and whether or not Strict mode is enabled.  In native mode the trailing ampersand is always
allowed, is never required and has no effect whatsoever on the resulting value.
Integral literals may also be specified in binary (base 2) by beginning the literal with an ampersand and
the letter B (upper or lower case) followed by one or more binary digits (0-1).  To improve readability, you
may also include one or more underscores within the digit string provided that each underscore occurs
between two digits.  For compatibility with other Basic dialects, an upper or lower case X may be used in
place of the radix indicator B.  Binary literals are not supported in BasicX compatibility mode.
Examples of decimal, hexadecimal and binary integral literals:
124
+16
-357
&HabCd
&H8000&
&B0010_0011
2.6.3 Numeric Literals - Real Values
A real numeric literal consists of one or more decimal digits, optionally with a leading plus or minus sign,
followed by either a decimal point and one or more decimal digits or the letter E followed by one or more
decimal digits also optionally prefixed by a plus or minus sign.  If the fractional part is present, it may also
be followed by an exponent specification.  For compatibility with other Basic dialects, a literal that would
otherwise be an integral literal will be interpreted as a real literal if it is immediately followed by an
exclamation mark.  Real literals have the type Single.
Examples of real literals:
3.14159
+6.02e23
3e10
-300!
BasicX Compatibility Note
In BasicX compatibility mode, real literals must either contain a decimal point or have a type
designation suffix ! or #  to force them to be recognized as type Single.  A literal like 12e2
represents the integer value 1200.
2.6.4 String Literals
A string literal consists of zero or more characters enclosed in quotation marks.  Note that a string may
not be continued on the next line by ending the first line with an underscore.  However, you may use the
concatenation operator in conjunction with the underscore continuation to span line boundaries.  The
compiler will combine the operands to the concatenation operator as long as they are both string
constants.  String literals have the type String.
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