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Annotation of 43BSDTahoe/usr.lib/learn/editor/L60.2c, revision 1.1

1.1     ! root        1: #print
        !             2: You can use an address on the 'r' command to read input at a particular
        !             3: location in the file.  Thus
        !             4:   5r name
        !             5: reads file "name" and appends its contents after line 5 of the file.
        !             6: You can use any kind of address, including a search.  Here is a file "chem".
        !             7: Find the line in file "chem" which contains the word "eight";
        !             8: read the file "more" and append it after that line.  Then rewrite
        !             9: "chem" and type "ready".
        !            10: #create Ref
        !            11:    When elements combine to form compounds, the electrons in the
        !            12: outermost shell of the atoms are the only ones that take part in the
        !            13: reaction.  These electrons are either transferred from the outer
        !            14: shell of one atom to the outer shell of another, or, in some cases,
        !            15: shared with the electrons in the outer shell of the second atom.
        !            16:    Whether the electrons are transfered to the second atom or shared,
        !            17: this atom completes its quota of eight electrons in the outer shell.
        !            18:    An oxide is a compound containing oxygen and one other element.
        !            19: The simplest of the oxides is H2O -- pure water, or hydrogen oxide.
        !            20: Carbon dioxide is CO2 and is formed during the burning of organic
        !            21: matter such as wood, paper, gasoline, or coal.  In the same burning
        !            22: process, H2O is formed and energy is released, generally as heat,
        !            23: sometimes as light.  Carbon dioxide is in the breath you just
        !            24: exhaled.  This gas is given off by decaying plant and animal matter.
        !            25: Decay is a burning process.
        !            26:    Oxidation is a word that covers all the different ways things
        !            27: burn.  When something oxidizes, it is burning.
        !            28:    Compounds which are formed by the interchange of electrons are
        !            29: called ionic compounds.  The ions formed are said to possess
        !            30: electrovalence.
        !            31: #create chem
        !            32:    When elements combine to form compounds, the electrons in the
        !            33: outermost shell of the atoms are the only ones that take part in the
        !            34: reaction.  These electrons are either transferred from the outer
        !            35: shell of one atom to the outer shell of another, or, in some cases,
        !            36: shared with the electrons in the outer shell of the second atom.
        !            37:    Whether the electrons are transfered to the second atom or shared,
        !            38: this atom completes its quota of eight electrons in the outer shell.
        !            39:    Compounds which are formed by the interchange of electrons are
        !            40: called ionic compounds.  The ions formed are said to possess
        !            41: electrovalence.
        !            42: #create more
        !            43:    An oxide is a compound containing oxygen and one other element.
        !            44: The simplest of the oxides is H2O -- pure water, or hydrogen oxide.
        !            45: Carbon dioxide is CO2 and is formed during the burning of organic
        !            46: matter such as wood, paper, gasoline, or coal.  In the same burning
        !            47: process, H2O is formed and energy is released, generally as heat,
        !            48: sometimes as light.  Carbon dioxide is in the breath you just
        !            49: exhaled.  This gas is given off by decaying plant and animal matter.
        !            50: Decay is a burning process.
        !            51:    Oxidation is a word that covers all the different ways things
        !            52: burn.  When something oxidizes, it is burning.
        !            53: #user
        !            54: #cmp chem Ref
        !            55: #log
        !            56: #next
        !            57: 60.2d 5

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