help_data={"\\frac": ["div", ["h2", "AFractions"], ["p", "A\nWrite a/b for inline fractions, as in ", "Ca/b", "A."], ["p", "AWrite \\frac{1}{2} for built-up fractions, as in ", "C\\frac{a}{b}", "A."]], "about": ["div", ["h2", "AAbout this software"], ["p", "A\nThis is a preliminary version of an online mathematics editor. and its\nassociated help system."], ["p", "AWe'd like to put a lot more content into the help system."], ["p", "AWe'd like to show you the TeX error messages (as we do on the MathTran\nhome page)."], ["p", "AWe'd like to link the TeX errors to the help system."], ["p", "AThis software has been developed with support from JISC and The Open\nUniversity."]], "eqns": ["div", ["h2", "AMisc equations"], ["p", "A\n", "D\n{\\rm grad} f = \n    \\frac{\\partial f}{\\partial r} {\\bf e}_r\n    + \\frac{1}{r}\\frac{\\partial f}{\\partial \\phi}\n        {\\bf e}_\\phi\n    + \\frac{\\partial f}{\\partial z}{\\bf e}_z\n", "A"], ["p", "A", "D\n\\nabla^2f = \\frac{1}{r}\\frac{\\partial}{\\partial r}\n    \\left(r \\frac{\\partial f}{\\partial r} \\right)\n    + \\frac{1}{r^2}\n        \\frac{\\partial^2 f}{\\partial \\phi^2}\n    + \\frac{\\partial^2f}{\\partial z^2}\n", "A"], ["p", "A", "D\n{\\rm div}{\\bf F} =\n    \\frac{1}{r^2}\\frac{\\partial}{\\partial r}\n        (r^2 F_r)\n    + \\frac{1}{r\\sin\\theta}\n        \\frac{\\partial}{\\partial\\theta}\n        (\\sin \\theta F_\\theta)\n    + \\frac{1}{r\\sin\\theta}\n        \\frac{\\partial F_\\theta}{\\partial\\phi}\n", "A"]], "doc_tabs": ["div", ["h2", "ADocument Pages"], ["p", "A\nThe basic idea of document pages is that a large document is divided\ninto smaller pieces, about a screenful at a time, for editing.  "], ["p", "AThis allows you to page-up and down the document, rather than\nscrolling through it."], ["p", "A(Not yet implemented.)"]], "index": ["div", ["h2", "AIndex"], ["ul", ["li", "B\\frac", "A Fractions"], ["li", "Babout", "A About this software"], ["li", "Bdoc_edit", "A Document Editor"], ["li", "Bdoc_tabs", "A Document Pages"], ["li", "Beqns", "A Misc equations"], ["li", "Bfaq", "A Frequently Asked Questions"], ["li", "Bform_edit", "A Formula Editor"], ["li", "Bgreek", "A Greek letters."], ["li", "Bhome", "A Getting started"], ["li", "Btex", "A About TeX"], ["li", "Btips", "A Useful tips"]]], "faq": ["div", ["h2", "AFrequently Asked Questions"], ["p", "A\nNothing here yet."]], "tex": ["div", ["h2", "AAbout TeX"], ["p", "A\nUse ^ for superscripts, like ", "Cx^2", "A."], ["p", "AUse _ for subscripts, like ", "Ca_1", "A"], ["p", "AUse { and } for grouping, as in ", "Cx^{a+b}", "A"], ["p", "AYou might want to look at ", "Btips", "A now."]], "greek": ["div", ["h2", "AGreek letters."], ["p", "A\nTo get ", "C\\pi", "A and ", "C\\Pi", "A use \\pi and \\Pi."], ["p", "ATo use the greek letters, you need to know their names."]], "form_edit": ["div", ["h2", "AFormula Editor"], ["p", "A\nClick 'paste' to copy the current formula (aobve) into the main editor\nwindow."], ["p", "AWe're thinking of allowing you to 'transfer' a formula from the main\neditor to the formula editor for editing.  The 'paste' button would\nthen send it back again."], ["p", "AIn other words, click on the formula in the preview window, edit it in\nthe formula window, and click 'paste' when you're done."], ["p", "AThe formula editor should have 'inline' and 'display' buttons."], ["p", "A"]], "home": ["div", ["h2", "AGetting started"], ["p", "A\nClick on any formula (such as ", "Cx^2 + y^2 = 1", "A) to copy it to the\nformula editor.  Change it there to get instant preview."], ["p", "AUse ", "Btex", "A notation for mathematics. Click paste above to copy\nformula into main window."], ["p", "AIn the document editor, delimit mathematics with single (inline) or\ndouble (display) dollar symbols. It also gives instant preview."]], "tips": ["div", ["h2", "AUseful tips"], ["p", "A\nTo get instant preview as you type, closing the math delimiters before\nentering the formula."], ["p", "AYou can use copy-and-paste to transfer the preview into HTML email."]], "doc_edit": ["div", ["h2", "ADocument Editor"], ["p", "A\nHelp for the document editor will go here."]]}