This is a link to an unlabeled figure (should be the first figure).

This is a link to an labeled figure (should be the second figure).

This is a link to a the bibl (should be the second figure).

This is a link to a formula (should be math05).

This is a link to a formula (should be math06).

Sample 1 of MathML encoding: V = 4 3 π r 3

Sample 2 of MathML encoding: E = m c 2

When a ≠ 0 , there are two solutions to a x 2 + b x + c = 0 and they are x = − b ± b 2 − 4 a c 2 a .

Samples of ASCIIMath encoding. When `a != 0`, there are two solutions to `ax^2 + bx + c = 0` and they are `x = (-b +- sqrt(b^2-4ac))/(2a) .`

Sample of TeX encoding: When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\), and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$. Furthermore, Einstein proved decisively that the relationship between energy and mass involves the speed of light, following the formula \(E=mc^2\). I have no idea what these next examples prove, but I'm sure it's important: $$ {1 \over 10} + {1 \over 100} + {1 \over 1000} + {1 \over 10,\!000} + \dots $$ I also think we should not have periods following block-level formulae. This one seems especially interesting: $$\matrix{0 & 1\cr<0&>1}$$

Sample of TeX encoding with extra delimiters: When \(\(a \ne 0\)\), there are two solutions to \(ax^2 + bx + c = 0\), and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$. Furthermore, Einstein proved decisively that the relationship between energy and mass involves the speed of light, following the formula \(\(E=mc^2\)\). I have no idea what these next examples prove, but I'm sure it's important: $$$$ {1 \over 10} + {1 \over 100} + {1 \over 1000} + {1 \over 10,\!000} + \dots $$$$ I also think we should not have periods following block-level formulae. This one seems especially interesting: $$$$\matrix{0 &amp; 1\cr&lt;0&amp;>1}$$$$ $$this\ is\ xml:id\ math05$$

$$this\ is\ xml:id\ math06\ in\ its\ own\ paragraph$$

Sample of TeX encoding with no delimiters: When a \ne 0, there are two solutions to ax^2 + bx + c = 0, and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$. Furthermore, Einstein proved decisively that the relationship between energy and mass involves the speed of light, following the formula E=mc^2. I have no idea what these next examples prove, but I'm sure it's important: {1 \over 10} + {1 \over 100} + {1 \over 1000} + {1 \over 10,\!000} + \dots I also think we should not have periods following block-level formulae. This one seems especially interesting: \matrix{0 &amp; 1\cr&lt;0&amp;>1}